/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 04:57:36,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 04:57:36,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 04:57:36,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 04:57:36,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-06-05 04:57:36,235 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 04:57:36,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 04:57:36,236 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 04:57:36,236 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 04:57:36,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 04:57:36,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 04:57:36,239 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 04:57:36,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 04:57:36,239 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 04:57:36,239 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 04:57:36,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 04:57:36,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 04:57:36,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 04:57:36,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 04:57:36,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 04:57:36,241 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 04:57:36,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 04:57:36,241 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 04:57:36,241 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 04:57:36,241 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 04:57:36,241 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 04:57:36,242 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 04:57:36,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 04:57:36,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 04:57:36,242 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 04:57:36,242 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 04:57:36,242 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 04:57:36,242 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 04:57:36,242 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 04:57:36,242 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 04:57:36,243 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 04:57:36,243 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 04:57:36,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 04:57:36,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 04:57:36,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 04:57:36,527 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 04:57:36,533 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 04:57:36,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-trans.wvr.bpl [2021-06-05 04:57:36,534 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-trans.wvr.bpl' [2021-06-05 04:57:36,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 04:57:36,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 04:57:36,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 04:57:36,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 04:57:36,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 04:57:36,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:57:36" (1/1) ... [2021-06-05 04:57:36,597 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:57:36" (1/1) ... [2021-06-05 04:57:36,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 04:57:36,612 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 04:57:36,612 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 04:57:36,612 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 04:57:36,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:57:36" (1/1) ... [2021-06-05 04:57:36,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:57:36" (1/1) ... [2021-06-05 04:57:36,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:57:36" (1/1) ... [2021-06-05 04:57:36,620 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:57:36" (1/1) ... [2021-06-05 04:57:36,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:57:36" (1/1) ... [2021-06-05 04:57:36,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:57:36" (1/1) ... [2021-06-05 04:57:36,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:57:36" (1/1) ... [2021-06-05 04:57:36,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 04:57:36,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 04:57:36,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 04:57:36,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 04:57:36,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:57:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 04:57:36,692 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-05 04:57:36,692 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-05 04:57:36,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-05 04:57:36,693 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-05 04:57:36,693 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-05 04:57:36,693 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-05 04:57:36,694 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 04:57:36,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 04:57:36,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 04:57:36,694 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-05 04:57:36,694 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-05 04:57:36,694 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-05 04:57:36,695 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 04:57:36,997 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 04:57:36,997 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-06-05 04:57:36,998 INFO L202 PluginConnector]: Adding new model word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 04:57:36 BoogieIcfgContainer [2021-06-05 04:57:36,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 04:57:37,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 04:57:37,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 04:57:37,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 04:57:37,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 04:57:36" (1/2) ... [2021-06-05 04:57:37,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a7b9ed4 and model type word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 04:57:37, skipping insertion in model container [2021-06-05 04:57:37,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 04:57:36" (2/2) ... [2021-06-05 04:57:37,004 INFO L111 eAbstractionObserver]: Analyzing ICFG word-trans.wvr.bpl [2021-06-05 04:57:37,025 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 04:57:37,025 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 04:57:37,025 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 04:57:37,026 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 04:57:37,071 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-06-05 04:57:37,092 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 04:57:37,124 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 04:57:37,124 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 04:57:37,124 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 04:57:37,125 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 04:57:37,125 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 04:57:37,125 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 04:57:37,125 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 04:57:37,125 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 04:57:37,132 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 28 transitions, 80 flow [2021-06-05 04:57:37,157 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 110 states, 108 states have (on average 3.4814814814814814) internal successors, (376), 109 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:37,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 3.4814814814814814) internal successors, (376), 109 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:37,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 04:57:37,168 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:37,168 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:37,169 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:37,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:37,173 INFO L82 PathProgramCache]: Analyzing trace with hash -200100504, now seen corresponding path program 1 times [2021-06-05 04:57:37,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:37,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124990240] [2021-06-05 04:57:37,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:37,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:37,456 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:37,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124990240] [2021-06-05 04:57:37,457 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124990240] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:37,457 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:37,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:37,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139144429] [2021-06-05 04:57:37,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:37,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:37,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:37,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:37,485 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 3.4814814814814814) internal successors, (376), 109 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:37,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:37,645 INFO L93 Difference]: Finished difference Result 230 states and 687 transitions. [2021-06-05 04:57:37,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:37,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 04:57:37,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:37,662 INFO L225 Difference]: With dead ends: 230 [2021-06-05 04:57:37,663 INFO L226 Difference]: Without dead ends: 215 [2021-06-05 04:57:37,664 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 100.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:37,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-06-05 04:57:37,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 126. [2021-06-05 04:57:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 3.368) internal successors, (421), 125 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:37,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 421 transitions. [2021-06-05 04:57:37,732 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 421 transitions. Word has length 14 [2021-06-05 04:57:37,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:37,733 INFO L482 AbstractCegarLoop]: Abstraction has 126 states and 421 transitions. [2021-06-05 04:57:37,733 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:37,733 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 421 transitions. [2021-06-05 04:57:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 04:57:37,735 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:37,735 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:37,735 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 04:57:37,735 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:37,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:37,736 INFO L82 PathProgramCache]: Analyzing trace with hash -393107442, now seen corresponding path program 2 times [2021-06-05 04:57:37,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:37,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451628411] [2021-06-05 04:57:37,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:37,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:37,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:37,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451628411] [2021-06-05 04:57:37,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451628411] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:37,839 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:37,839 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:37,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343636470] [2021-06-05 04:57:37,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:37,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:37,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:37,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:37,846 INFO L87 Difference]: Start difference. First operand 126 states and 421 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:37,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:37,970 INFO L93 Difference]: Finished difference Result 257 states and 779 transitions. [2021-06-05 04:57:37,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:37,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 04:57:37,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:37,975 INFO L225 Difference]: With dead ends: 257 [2021-06-05 04:57:37,975 INFO L226 Difference]: Without dead ends: 242 [2021-06-05 04:57:37,976 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:37,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-06-05 04:57:38,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 132. [2021-06-05 04:57:38,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 3.312977099236641) internal successors, (434), 131 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 434 transitions. [2021-06-05 04:57:38,004 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 434 transitions. Word has length 14 [2021-06-05 04:57:38,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:38,004 INFO L482 AbstractCegarLoop]: Abstraction has 132 states and 434 transitions. [2021-06-05 04:57:38,004 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,005 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 434 transitions. [2021-06-05 04:57:38,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 04:57:38,008 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:38,008 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:38,008 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 04:57:38,008 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:38,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:38,009 INFO L82 PathProgramCache]: Analyzing trace with hash 463457742, now seen corresponding path program 3 times [2021-06-05 04:57:38,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:38,011 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743788027] [2021-06-05 04:57:38,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:38,083 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:38,083 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743788027] [2021-06-05 04:57:38,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743788027] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:38,084 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:38,084 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:38,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316665982] [2021-06-05 04:57:38,084 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:38,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:38,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:38,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:38,085 INFO L87 Difference]: Start difference. First operand 132 states and 434 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:38,173 INFO L93 Difference]: Finished difference Result 244 states and 710 transitions. [2021-06-05 04:57:38,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:38,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 04:57:38,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:38,176 INFO L225 Difference]: With dead ends: 244 [2021-06-05 04:57:38,179 INFO L226 Difference]: Without dead ends: 229 [2021-06-05 04:57:38,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 61.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:38,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-06-05 04:57:38,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 136. [2021-06-05 04:57:38,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 3.3333333333333335) internal successors, (450), 135 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 450 transitions. [2021-06-05 04:57:38,198 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 450 transitions. Word has length 14 [2021-06-05 04:57:38,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:38,198 INFO L482 AbstractCegarLoop]: Abstraction has 136 states and 450 transitions. [2021-06-05 04:57:38,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,198 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 450 transitions. [2021-06-05 04:57:38,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 04:57:38,201 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:38,201 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:38,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 04:57:38,201 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:38,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:38,202 INFO L82 PathProgramCache]: Analyzing trace with hash 332136738, now seen corresponding path program 4 times [2021-06-05 04:57:38,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:38,202 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101580294] [2021-06-05 04:57:38,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:38,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:38,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:38,280 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101580294] [2021-06-05 04:57:38,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101580294] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:38,281 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:38,281 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:38,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256345063] [2021-06-05 04:57:38,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:38,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:38,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:38,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:38,283 INFO L87 Difference]: Start difference. First operand 136 states and 450 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:38,377 INFO L93 Difference]: Finished difference Result 251 states and 743 transitions. [2021-06-05 04:57:38,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:38,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 04:57:38,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:38,380 INFO L225 Difference]: With dead ends: 251 [2021-06-05 04:57:38,380 INFO L226 Difference]: Without dead ends: 236 [2021-06-05 04:57:38,381 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:38,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-06-05 04:57:38,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 140. [2021-06-05 04:57:38,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 3.2949640287769784) internal successors, (458), 139 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 458 transitions. [2021-06-05 04:57:38,387 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 458 transitions. Word has length 14 [2021-06-05 04:57:38,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:38,387 INFO L482 AbstractCegarLoop]: Abstraction has 140 states and 458 transitions. [2021-06-05 04:57:38,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,388 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 458 transitions. [2021-06-05 04:57:38,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 04:57:38,388 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:38,389 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:38,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 04:57:38,389 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:38,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:38,389 INFO L82 PathProgramCache]: Analyzing trace with hash -515835448, now seen corresponding path program 5 times [2021-06-05 04:57:38,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:38,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41817417] [2021-06-05 04:57:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:38,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:38,451 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:38,451 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41817417] [2021-06-05 04:57:38,451 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41817417] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:38,451 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:38,451 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:38,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708434339] [2021-06-05 04:57:38,452 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:38,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:38,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:38,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:38,453 INFO L87 Difference]: Start difference. First operand 140 states and 458 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:38,562 INFO L93 Difference]: Finished difference Result 279 states and 867 transitions. [2021-06-05 04:57:38,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:38,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 04:57:38,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:38,565 INFO L225 Difference]: With dead ends: 279 [2021-06-05 04:57:38,565 INFO L226 Difference]: Without dead ends: 264 [2021-06-05 04:57:38,565 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:38,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-06-05 04:57:38,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 142. [2021-06-05 04:57:38,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 3.3120567375886525) internal successors, (467), 141 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 467 transitions. [2021-06-05 04:57:38,573 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 467 transitions. Word has length 14 [2021-06-05 04:57:38,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:38,573 INFO L482 AbstractCegarLoop]: Abstraction has 142 states and 467 transitions. [2021-06-05 04:57:38,573 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,573 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 467 transitions. [2021-06-05 04:57:38,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-06-05 04:57:38,574 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:38,574 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:38,574 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 04:57:38,574 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:38,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:38,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1214544498, now seen corresponding path program 6 times [2021-06-05 04:57:38,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:38,575 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404506403] [2021-06-05 04:57:38,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:38,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:38,643 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:38,644 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404506403] [2021-06-05 04:57:38,644 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404506403] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:38,644 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:38,644 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:38,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140319532] [2021-06-05 04:57:38,645 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:38,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:38,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:38,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:38,646 INFO L87 Difference]: Start difference. First operand 142 states and 467 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:38,740 INFO L93 Difference]: Finished difference Result 270 states and 831 transitions. [2021-06-05 04:57:38,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:38,740 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-06-05 04:57:38,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:38,742 INFO L225 Difference]: With dead ends: 270 [2021-06-05 04:57:38,742 INFO L226 Difference]: Without dead ends: 255 [2021-06-05 04:57:38,743 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:38,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-06-05 04:57:38,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 142. [2021-06-05 04:57:38,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 3.3120567375886525) internal successors, (467), 141 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 467 transitions. [2021-06-05 04:57:38,749 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 467 transitions. Word has length 14 [2021-06-05 04:57:38,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:38,749 INFO L482 AbstractCegarLoop]: Abstraction has 142 states and 467 transitions. [2021-06-05 04:57:38,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,749 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 467 transitions. [2021-06-05 04:57:38,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:38,750 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:38,750 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:38,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 04:57:38,751 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:38,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1927039172, now seen corresponding path program 1 times [2021-06-05 04:57:38,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:38,751 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668280281] [2021-06-05 04:57:38,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:38,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:38,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:38,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:38,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668280281] [2021-06-05 04:57:38,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668280281] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:38,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:38,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:38,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561013686] [2021-06-05 04:57:38,806 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:38,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:38,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:38,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:38,807 INFO L87 Difference]: Start difference. First operand 142 states and 467 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:38,894 INFO L93 Difference]: Finished difference Result 280 states and 843 transitions. [2021-06-05 04:57:38,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:38,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:38,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:38,897 INFO L225 Difference]: With dead ends: 280 [2021-06-05 04:57:38,897 INFO L226 Difference]: Without dead ends: 259 [2021-06-05 04:57:38,897 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:38,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-06-05 04:57:38,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 147. [2021-06-05 04:57:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 3.3219178082191783) internal successors, (485), 146 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 485 transitions. [2021-06-05 04:57:38,902 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 485 transitions. Word has length 15 [2021-06-05 04:57:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:38,902 INFO L482 AbstractCegarLoop]: Abstraction has 147 states and 485 transitions. [2021-06-05 04:57:38,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:38,903 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 485 transitions. [2021-06-05 04:57:38,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:38,903 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:38,903 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:38,903 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 04:57:38,903 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:38,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:38,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1938853291, now seen corresponding path program 1 times [2021-06-05 04:57:38,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:38,904 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830800944] [2021-06-05 04:57:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:39,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:39,022 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:39,023 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830800944] [2021-06-05 04:57:39,023 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830800944] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:39,023 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:39,023 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:39,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627370215] [2021-06-05 04:57:39,023 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:39,023 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:39,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:39,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:39,024 INFO L87 Difference]: Start difference. First operand 147 states and 485 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:39,084 INFO L93 Difference]: Finished difference Result 262 states and 767 transitions. [2021-06-05 04:57:39,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:39,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:39,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:39,086 INFO L225 Difference]: With dead ends: 262 [2021-06-05 04:57:39,086 INFO L226 Difference]: Without dead ends: 229 [2021-06-05 04:57:39,086 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.8ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:39,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-06-05 04:57:39,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 147. [2021-06-05 04:57:39,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 3.287671232876712) internal successors, (480), 146 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 480 transitions. [2021-06-05 04:57:39,092 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 480 transitions. Word has length 15 [2021-06-05 04:57:39,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:39,092 INFO L482 AbstractCegarLoop]: Abstraction has 147 states and 480 transitions. [2021-06-05 04:57:39,092 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,093 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 480 transitions. [2021-06-05 04:57:39,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:39,093 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:39,093 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:39,093 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 04:57:39,094 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:39,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:39,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1727583463, now seen corresponding path program 2 times [2021-06-05 04:57:39,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:39,094 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626844000] [2021-06-05 04:57:39,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:39,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:39,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626844000] [2021-06-05 04:57:39,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626844000] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:39,162 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:39,162 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:39,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214802681] [2021-06-05 04:57:39,163 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:39,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:39,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:39,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:39,163 INFO L87 Difference]: Start difference. First operand 147 states and 480 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:39,233 INFO L93 Difference]: Finished difference Result 278 states and 838 transitions. [2021-06-05 04:57:39,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:39,233 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:39,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:39,235 INFO L225 Difference]: With dead ends: 278 [2021-06-05 04:57:39,235 INFO L226 Difference]: Without dead ends: 256 [2021-06-05 04:57:39,235 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 56.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:39,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-06-05 04:57:39,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 150. [2021-06-05 04:57:39,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 3.295302013422819) internal successors, (491), 149 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 491 transitions. [2021-06-05 04:57:39,241 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 491 transitions. Word has length 15 [2021-06-05 04:57:39,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:39,241 INFO L482 AbstractCegarLoop]: Abstraction has 150 states and 491 transitions. [2021-06-05 04:57:39,242 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,242 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 491 transitions. [2021-06-05 04:57:39,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:39,242 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:39,242 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:39,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 04:57:39,243 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:39,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:39,243 INFO L82 PathProgramCache]: Analyzing trace with hash -258187012, now seen corresponding path program 2 times [2021-06-05 04:57:39,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:39,243 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393487752] [2021-06-05 04:57:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:39,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:39,290 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:39,290 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393487752] [2021-06-05 04:57:39,290 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393487752] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:39,290 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:39,290 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:39,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851121033] [2021-06-05 04:57:39,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:39,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:39,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:39,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:39,291 INFO L87 Difference]: Start difference. First operand 150 states and 491 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:39,356 INFO L93 Difference]: Finished difference Result 281 states and 840 transitions. [2021-06-05 04:57:39,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:39,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:39,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:39,358 INFO L225 Difference]: With dead ends: 281 [2021-06-05 04:57:39,358 INFO L226 Difference]: Without dead ends: 254 [2021-06-05 04:57:39,358 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:39,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-06-05 04:57:39,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 150. [2021-06-05 04:57:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 3.2751677852348995) internal successors, (488), 149 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 488 transitions. [2021-06-05 04:57:39,364 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 488 transitions. Word has length 15 [2021-06-05 04:57:39,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:39,364 INFO L482 AbstractCegarLoop]: Abstraction has 150 states and 488 transitions. [2021-06-05 04:57:39,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,364 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 488 transitions. [2021-06-05 04:57:39,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:39,365 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:39,365 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:39,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 04:57:39,365 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:39,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:39,365 INFO L82 PathProgramCache]: Analyzing trace with hash 1713787741, now seen corresponding path program 1 times [2021-06-05 04:57:39,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:39,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839545077] [2021-06-05 04:57:39,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:39,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:39,407 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:39,407 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839545077] [2021-06-05 04:57:39,407 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839545077] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:39,407 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:39,407 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:39,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285199821] [2021-06-05 04:57:39,408 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:39,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:39,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:39,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:39,409 INFO L87 Difference]: Start difference. First operand 150 states and 488 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:39,475 INFO L93 Difference]: Finished difference Result 281 states and 835 transitions. [2021-06-05 04:57:39,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:39,476 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:39,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:39,477 INFO L225 Difference]: With dead ends: 281 [2021-06-05 04:57:39,477 INFO L226 Difference]: Without dead ends: 262 [2021-06-05 04:57:39,478 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:39,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-06-05 04:57:39,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 154. [2021-06-05 04:57:39,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 3.281045751633987) internal successors, (502), 153 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 502 transitions. [2021-06-05 04:57:39,485 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 502 transitions. Word has length 15 [2021-06-05 04:57:39,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:39,485 INFO L482 AbstractCegarLoop]: Abstraction has 154 states and 502 transitions. [2021-06-05 04:57:39,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,485 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 502 transitions. [2021-06-05 04:57:39,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:39,486 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:39,486 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:39,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-05 04:57:39,486 INFO L430 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:39,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:39,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1520780803, now seen corresponding path program 2 times [2021-06-05 04:57:39,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:39,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143547154] [2021-06-05 04:57:39,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:39,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:39,513 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:39,513 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143547154] [2021-06-05 04:57:39,513 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143547154] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:39,513 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:39,513 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:39,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334221] [2021-06-05 04:57:39,514 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:39,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:39,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:39,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:39,514 INFO L87 Difference]: Start difference. First operand 154 states and 502 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:39,587 INFO L93 Difference]: Finished difference Result 373 states and 1108 transitions. [2021-06-05 04:57:39,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:57:39,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:39,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:39,590 INFO L225 Difference]: With dead ends: 373 [2021-06-05 04:57:39,590 INFO L226 Difference]: Without dead ends: 354 [2021-06-05 04:57:39,590 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 27.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:39,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-06-05 04:57:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 156. [2021-06-05 04:57:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 3.2838709677419353) internal successors, (509), 155 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 509 transitions. [2021-06-05 04:57:39,598 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 509 transitions. Word has length 15 [2021-06-05 04:57:39,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:39,598 INFO L482 AbstractCegarLoop]: Abstraction has 156 states and 509 transitions. [2021-06-05 04:57:39,598 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,598 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 509 transitions. [2021-06-05 04:57:39,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:39,599 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:39,599 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:39,599 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-06-05 04:57:39,599 INFO L430 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:39,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:39,600 INFO L82 PathProgramCache]: Analyzing trace with hash -473139912, now seen corresponding path program 3 times [2021-06-05 04:57:39,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:39,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353983133] [2021-06-05 04:57:39,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:39,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:39,627 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:39,627 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353983133] [2021-06-05 04:57:39,628 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353983133] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:39,628 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:39,628 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:39,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856134267] [2021-06-05 04:57:39,628 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:39,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:39,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:39,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:39,629 INFO L87 Difference]: Start difference. First operand 156 states and 509 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:39,688 INFO L93 Difference]: Finished difference Result 298 states and 879 transitions. [2021-06-05 04:57:39,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:39,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:39,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:39,690 INFO L225 Difference]: With dead ends: 298 [2021-06-05 04:57:39,690 INFO L226 Difference]: Without dead ends: 277 [2021-06-05 04:57:39,690 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:39,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-06-05 04:57:39,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 156. [2021-06-05 04:57:39,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 3.2838709677419353) internal successors, (509), 155 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 509 transitions. [2021-06-05 04:57:39,697 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 509 transitions. Word has length 15 [2021-06-05 04:57:39,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:39,698 INFO L482 AbstractCegarLoop]: Abstraction has 156 states and 509 transitions. [2021-06-05 04:57:39,698 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,698 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 509 transitions. [2021-06-05 04:57:39,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:39,698 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:39,699 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:39,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-06-05 04:57:39,699 INFO L430 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:39,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:39,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1293754188, now seen corresponding path program 4 times [2021-06-05 04:57:39,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:39,700 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961472608] [2021-06-05 04:57:39,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:39,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:39,725 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:39,725 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961472608] [2021-06-05 04:57:39,725 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961472608] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:39,725 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:39,725 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:39,725 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876195300] [2021-06-05 04:57:39,726 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:39,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:39,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:39,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:39,726 INFO L87 Difference]: Start difference. First operand 156 states and 509 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:39,800 INFO L93 Difference]: Finished difference Result 353 states and 1040 transitions. [2021-06-05 04:57:39,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:57:39,801 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:39,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:39,802 INFO L225 Difference]: With dead ends: 353 [2021-06-05 04:57:39,803 INFO L226 Difference]: Without dead ends: 332 [2021-06-05 04:57:39,803 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:39,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-06-05 04:57:39,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 154. [2021-06-05 04:57:39,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 3.2679738562091503) internal successors, (500), 153 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 500 transitions. [2021-06-05 04:57:39,812 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 500 transitions. Word has length 15 [2021-06-05 04:57:39,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:39,812 INFO L482 AbstractCegarLoop]: Abstraction has 154 states and 500 transitions. [2021-06-05 04:57:39,812 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,812 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 500 transitions. [2021-06-05 04:57:39,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:39,813 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:39,813 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:39,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-06-05 04:57:39,813 INFO L430 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:39,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:39,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1451583151, now seen corresponding path program 3 times [2021-06-05 04:57:39,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:39,814 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580047879] [2021-06-05 04:57:39,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:39,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:39,857 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:39,857 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580047879] [2021-06-05 04:57:39,857 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580047879] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:39,857 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:39,857 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:39,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324911615] [2021-06-05 04:57:39,858 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:39,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:39,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:39,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:39,858 INFO L87 Difference]: Start difference. First operand 154 states and 500 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:39,912 INFO L93 Difference]: Finished difference Result 281 states and 800 transitions. [2021-06-05 04:57:39,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:39,912 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:39,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:39,914 INFO L225 Difference]: With dead ends: 281 [2021-06-05 04:57:39,914 INFO L226 Difference]: Without dead ends: 248 [2021-06-05 04:57:39,914 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:39,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-06-05 04:57:39,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 158. [2021-06-05 04:57:39,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 3.261146496815287) internal successors, (512), 157 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 512 transitions. [2021-06-05 04:57:39,920 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 512 transitions. Word has length 15 [2021-06-05 04:57:39,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:39,920 INFO L482 AbstractCegarLoop]: Abstraction has 158 states and 512 transitions. [2021-06-05 04:57:39,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:39,920 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 512 transitions. [2021-06-05 04:57:39,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:39,921 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:39,921 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:39,921 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-06-05 04:57:39,921 INFO L430 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:39,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:39,921 INFO L82 PathProgramCache]: Analyzing trace with hash 372369077, now seen corresponding path program 3 times [2021-06-05 04:57:39,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:39,922 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985738610] [2021-06-05 04:57:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:39,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:39,960 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:39,960 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985738610] [2021-06-05 04:57:39,960 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985738610] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:39,960 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:39,960 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:39,960 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520655330] [2021-06-05 04:57:39,960 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:39,961 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:39,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:39,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:39,961 INFO L87 Difference]: Start difference. First operand 158 states and 512 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:40,039 INFO L93 Difference]: Finished difference Result 282 states and 815 transitions. [2021-06-05 04:57:40,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:40,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:40,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:40,041 INFO L225 Difference]: With dead ends: 282 [2021-06-05 04:57:40,041 INFO L226 Difference]: Without dead ends: 263 [2021-06-05 04:57:40,041 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.4ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:40,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-06-05 04:57:40,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 158. [2021-06-05 04:57:40,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 3.261146496815287) internal successors, (512), 157 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 512 transitions. [2021-06-05 04:57:40,054 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 512 transitions. Word has length 15 [2021-06-05 04:57:40,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:40,055 INFO L482 AbstractCegarLoop]: Abstraction has 158 states and 512 transitions. [2021-06-05 04:57:40,055 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,055 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 512 transitions. [2021-06-05 04:57:40,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:40,055 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:40,056 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:40,056 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-06-05 04:57:40,056 INFO L430 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:40,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:40,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1827392437, now seen corresponding path program 4 times [2021-06-05 04:57:40,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:40,057 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165166936] [2021-06-05 04:57:40,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:40,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:40,094 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:40,094 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165166936] [2021-06-05 04:57:40,094 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165166936] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:40,094 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:40,095 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:40,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802030132] [2021-06-05 04:57:40,095 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:40,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:40,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:40,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:40,096 INFO L87 Difference]: Start difference. First operand 158 states and 512 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:40,162 INFO L93 Difference]: Finished difference Result 273 states and 790 transitions. [2021-06-05 04:57:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:40,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:40,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:40,164 INFO L225 Difference]: With dead ends: 273 [2021-06-05 04:57:40,164 INFO L226 Difference]: Without dead ends: 251 [2021-06-05 04:57:40,164 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:40,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-06-05 04:57:40,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 160. [2021-06-05 04:57:40,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.2641509433962264) internal successors, (519), 159 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 519 transitions. [2021-06-05 04:57:40,170 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 519 transitions. Word has length 15 [2021-06-05 04:57:40,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:40,170 INFO L482 AbstractCegarLoop]: Abstraction has 160 states and 519 transitions. [2021-06-05 04:57:40,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,170 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 519 transitions. [2021-06-05 04:57:40,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:40,171 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:40,171 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:40,171 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-06-05 04:57:40,171 INFO L430 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:40,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:40,171 INFO L82 PathProgramCache]: Analyzing trace with hash 384286855, now seen corresponding path program 4 times [2021-06-05 04:57:40,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:40,171 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079781273] [2021-06-05 04:57:40,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:40,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:40,217 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:40,217 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079781273] [2021-06-05 04:57:40,217 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079781273] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:40,217 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:40,217 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:40,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984841662] [2021-06-05 04:57:40,219 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:40,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:40,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:40,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:40,220 INFO L87 Difference]: Start difference. First operand 160 states and 519 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:40,280 INFO L93 Difference]: Finished difference Result 254 states and 753 transitions. [2021-06-05 04:57:40,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:40,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:40,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:40,282 INFO L225 Difference]: With dead ends: 254 [2021-06-05 04:57:40,282 INFO L226 Difference]: Without dead ends: 231 [2021-06-05 04:57:40,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:40,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-06-05 04:57:40,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 160. [2021-06-05 04:57:40,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.251572327044025) internal successors, (517), 159 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 517 transitions. [2021-06-05 04:57:40,289 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 517 transitions. Word has length 15 [2021-06-05 04:57:40,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:40,289 INFO L482 AbstractCegarLoop]: Abstraction has 160 states and 517 transitions. [2021-06-05 04:57:40,289 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,289 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 517 transitions. [2021-06-05 04:57:40,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:40,290 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:40,290 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:40,290 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-06-05 04:57:40,290 INFO L430 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:40,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:40,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1496312779, now seen corresponding path program 5 times [2021-06-05 04:57:40,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:40,291 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728589730] [2021-06-05 04:57:40,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:40,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:40,328 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:40,328 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728589730] [2021-06-05 04:57:40,329 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728589730] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:40,329 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:40,329 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:40,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615326252] [2021-06-05 04:57:40,330 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:40,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:40,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:40,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:40,331 INFO L87 Difference]: Start difference. First operand 160 states and 517 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:40,382 INFO L93 Difference]: Finished difference Result 286 states and 846 transitions. [2021-06-05 04:57:40,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:40,383 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:40,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:40,384 INFO L225 Difference]: With dead ends: 286 [2021-06-05 04:57:40,384 INFO L226 Difference]: Without dead ends: 264 [2021-06-05 04:57:40,384 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.3ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:40,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-06-05 04:57:40,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 160. [2021-06-05 04:57:40,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.251572327044025) internal successors, (517), 159 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 517 transitions. [2021-06-05 04:57:40,390 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 517 transitions. Word has length 15 [2021-06-05 04:57:40,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:40,390 INFO L482 AbstractCegarLoop]: Abstraction has 160 states and 517 transitions. [2021-06-05 04:57:40,390 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,390 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 517 transitions. [2021-06-05 04:57:40,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:40,391 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:40,391 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:40,391 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-06-05 04:57:40,391 INFO L430 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:40,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:40,391 INFO L82 PathProgramCache]: Analyzing trace with hash 2099945467, now seen corresponding path program 6 times [2021-06-05 04:57:40,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:40,392 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120028983] [2021-06-05 04:57:40,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:40,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:40,417 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:40,417 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120028983] [2021-06-05 04:57:40,417 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120028983] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:40,417 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:40,417 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:40,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612504326] [2021-06-05 04:57:40,418 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:40,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:40,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:40,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:40,418 INFO L87 Difference]: Start difference. First operand 160 states and 517 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:40,478 INFO L93 Difference]: Finished difference Result 277 states and 810 transitions. [2021-06-05 04:57:40,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:40,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:40,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:40,479 INFO L225 Difference]: With dead ends: 277 [2021-06-05 04:57:40,480 INFO L226 Difference]: Without dead ends: 255 [2021-06-05 04:57:40,480 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.7ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:40,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-06-05 04:57:40,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 158. [2021-06-05 04:57:40,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 3.2356687898089174) internal successors, (508), 157 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 508 transitions. [2021-06-05 04:57:40,485 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 508 transitions. Word has length 15 [2021-06-05 04:57:40,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:40,485 INFO L482 AbstractCegarLoop]: Abstraction has 158 states and 508 transitions. [2021-06-05 04:57:40,485 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,485 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 508 transitions. [2021-06-05 04:57:40,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:40,486 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:40,486 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:40,486 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-06-05 04:57:40,486 INFO L430 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:40,486 INFO L82 PathProgramCache]: Analyzing trace with hash 232212098, now seen corresponding path program 5 times [2021-06-05 04:57:40,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:40,487 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113827534] [2021-06-05 04:57:40,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:40,520 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:40,520 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113827534] [2021-06-05 04:57:40,520 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113827534] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:40,520 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:40,520 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:40,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239705113] [2021-06-05 04:57:40,520 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:40,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:40,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:40,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:40,521 INFO L87 Difference]: Start difference. First operand 158 states and 508 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:40,580 INFO L93 Difference]: Finished difference Result 312 states and 947 transitions. [2021-06-05 04:57:40,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:40,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:40,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:40,582 INFO L225 Difference]: With dead ends: 312 [2021-06-05 04:57:40,582 INFO L226 Difference]: Without dead ends: 285 [2021-06-05 04:57:40,582 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.9ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:40,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-06-05 04:57:40,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 160. [2021-06-05 04:57:40,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.238993710691824) internal successors, (515), 159 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 515 transitions. [2021-06-05 04:57:40,590 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 515 transitions. Word has length 15 [2021-06-05 04:57:40,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:40,590 INFO L482 AbstractCegarLoop]: Abstraction has 160 states and 515 transitions. [2021-06-05 04:57:40,590 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,590 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 515 transitions. [2021-06-05 04:57:40,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:40,592 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:40,592 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:40,592 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-06-05 04:57:40,592 INFO L430 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:40,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:40,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1046340473, now seen corresponding path program 5 times [2021-06-05 04:57:40,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:40,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3923008] [2021-06-05 04:57:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:40,623 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:40,623 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3923008] [2021-06-05 04:57:40,623 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3923008] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:40,623 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:40,623 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:40,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572054992] [2021-06-05 04:57:40,623 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:40,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:40,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:40,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:40,625 INFO L87 Difference]: Start difference. First operand 160 states and 515 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:40,696 INFO L93 Difference]: Finished difference Result 371 states and 1121 transitions. [2021-06-05 04:57:40,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:57:40,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:40,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:40,698 INFO L225 Difference]: With dead ends: 371 [2021-06-05 04:57:40,698 INFO L226 Difference]: Without dead ends: 352 [2021-06-05 04:57:40,698 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:40,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-06-05 04:57:40,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 160. [2021-06-05 04:57:40,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.238993710691824) internal successors, (515), 159 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 515 transitions. [2021-06-05 04:57:40,705 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 515 transitions. Word has length 15 [2021-06-05 04:57:40,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:40,705 INFO L482 AbstractCegarLoop]: Abstraction has 160 states and 515 transitions. [2021-06-05 04:57:40,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,705 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 515 transitions. [2021-06-05 04:57:40,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:40,706 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:40,706 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:40,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-06-05 04:57:40,706 INFO L430 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:40,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:40,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1131085214, now seen corresponding path program 6 times [2021-06-05 04:57:40,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:40,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509825503] [2021-06-05 04:57:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:40,733 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:40,733 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509825503] [2021-06-05 04:57:40,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509825503] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:40,734 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:40,734 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:40,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020899089] [2021-06-05 04:57:40,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:40,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:40,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:40,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:40,735 INFO L87 Difference]: Start difference. First operand 160 states and 515 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:40,814 INFO L93 Difference]: Finished difference Result 377 states and 1137 transitions. [2021-06-05 04:57:40,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:57:40,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:40,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:40,816 INFO L225 Difference]: With dead ends: 377 [2021-06-05 04:57:40,817 INFO L226 Difference]: Without dead ends: 356 [2021-06-05 04:57:40,817 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:40,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-06-05 04:57:40,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 160. [2021-06-05 04:57:40,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.238993710691824) internal successors, (515), 159 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 515 transitions. [2021-06-05 04:57:40,823 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 515 transitions. Word has length 15 [2021-06-05 04:57:40,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:40,823 INFO L482 AbstractCegarLoop]: Abstraction has 160 states and 515 transitions. [2021-06-05 04:57:40,823 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,823 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 515 transitions. [2021-06-05 04:57:40,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-06-05 04:57:40,824 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:40,824 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:40,824 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-06-05 04:57:40,824 INFO L430 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:40,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:40,825 INFO L82 PathProgramCache]: Analyzing trace with hash -964122021, now seen corresponding path program 6 times [2021-06-05 04:57:40,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:40,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69356945] [2021-06-05 04:57:40,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:40,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:40,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:40,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69356945] [2021-06-05 04:57:40,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69356945] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:40,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:40,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-06-05 04:57:40,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434824852] [2021-06-05 04:57:40,851 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 04:57:40,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:40,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 04:57:40,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:40,852 INFO L87 Difference]: Start difference. First operand 160 states and 515 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:40,901 INFO L93 Difference]: Finished difference Result 268 states and 825 transitions. [2021-06-05 04:57:40,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:40,902 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-06-05 04:57:40,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:40,903 INFO L225 Difference]: With dead ends: 268 [2021-06-05 04:57:40,903 INFO L226 Difference]: Without dead ends: 245 [2021-06-05 04:57:40,903 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:40,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-06-05 04:57:40,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 160. [2021-06-05 04:57:40,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.2264150943396226) internal successors, (513), 159 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 513 transitions. [2021-06-05 04:57:40,927 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 513 transitions. Word has length 15 [2021-06-05 04:57:40,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:40,928 INFO L482 AbstractCegarLoop]: Abstraction has 160 states and 513 transitions. [2021-06-05 04:57:40,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,928 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 513 transitions. [2021-06-05 04:57:40,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:57:40,928 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:40,928 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:40,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-06-05 04:57:40,929 INFO L430 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:40,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:40,929 INFO L82 PathProgramCache]: Analyzing trace with hash 360622849, now seen corresponding path program 1 times [2021-06-05 04:57:40,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:40,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370555367] [2021-06-05 04:57:40,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:40,952 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:40,952 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370555367] [2021-06-05 04:57:40,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370555367] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:40,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:40,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 04:57:40,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901667063] [2021-06-05 04:57:40,953 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:57:40,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:40,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:57:40,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 04:57:40,954 INFO L87 Difference]: Start difference. First operand 160 states and 513 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:40,974 INFO L93 Difference]: Finished difference Result 304 states and 846 transitions. [2021-06-05 04:57:40,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:40,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:57:40,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:40,976 INFO L225 Difference]: With dead ends: 304 [2021-06-05 04:57:40,976 INFO L226 Difference]: Without dead ends: 282 [2021-06-05 04:57:40,976 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:40,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-06-05 04:57:40,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 160. [2021-06-05 04:57:40,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.1823899371069184) internal successors, (506), 159 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 506 transitions. [2021-06-05 04:57:40,982 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 506 transitions. Word has length 16 [2021-06-05 04:57:40,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:40,982 INFO L482 AbstractCegarLoop]: Abstraction has 160 states and 506 transitions. [2021-06-05 04:57:40,982 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:40,982 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 506 transitions. [2021-06-05 04:57:40,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:57:40,983 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:40,983 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:40,983 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-06-05 04:57:40,983 INFO L430 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:40,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:40,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1058721603, now seen corresponding path program 2 times [2021-06-05 04:57:40,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:40,983 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884263164] [2021-06-05 04:57:40,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:40,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:41,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:41,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884263164] [2021-06-05 04:57:41,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884263164] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:41,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:41,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 04:57:41,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313605012] [2021-06-05 04:57:41,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:57:41,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:41,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:57:41,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 04:57:41,003 INFO L87 Difference]: Start difference. First operand 160 states and 506 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:41,025 INFO L93 Difference]: Finished difference Result 298 states and 826 transitions. [2021-06-05 04:57:41,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:41,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:57:41,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:41,027 INFO L225 Difference]: With dead ends: 298 [2021-06-05 04:57:41,027 INFO L226 Difference]: Without dead ends: 276 [2021-06-05 04:57:41,027 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:41,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-06-05 04:57:41,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 153. [2021-06-05 04:57:41,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 3.223684210526316) internal successors, (490), 152 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 490 transitions. [2021-06-05 04:57:41,033 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 490 transitions. Word has length 16 [2021-06-05 04:57:41,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:41,033 INFO L482 AbstractCegarLoop]: Abstraction has 153 states and 490 transitions. [2021-06-05 04:57:41,033 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,033 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 490 transitions. [2021-06-05 04:57:41,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:57:41,033 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:41,034 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:41,034 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-06-05 04:57:41,034 INFO L430 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:41,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:41,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1568921575, now seen corresponding path program 1 times [2021-06-05 04:57:41,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:41,034 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416510535] [2021-06-05 04:57:41,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:41,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:41,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:41,050 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416510535] [2021-06-05 04:57:41,050 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416510535] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:41,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:41,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 04:57:41,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263189133] [2021-06-05 04:57:41,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:57:41,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:41,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:57:41,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 04:57:41,051 INFO L87 Difference]: Start difference. First operand 153 states and 490 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:41,078 INFO L93 Difference]: Finished difference Result 267 states and 761 transitions. [2021-06-05 04:57:41,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:41,079 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:57:41,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:41,080 INFO L225 Difference]: With dead ends: 267 [2021-06-05 04:57:41,080 INFO L226 Difference]: Without dead ends: 267 [2021-06-05 04:57:41,080 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:41,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-06-05 04:57:41,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 145. [2021-06-05 04:57:41,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 3.2083333333333335) internal successors, (462), 144 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 462 transitions. [2021-06-05 04:57:41,086 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 462 transitions. Word has length 16 [2021-06-05 04:57:41,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:41,086 INFO L482 AbstractCegarLoop]: Abstraction has 145 states and 462 transitions. [2021-06-05 04:57:41,086 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,086 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 462 transitions. [2021-06-05 04:57:41,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:57:41,087 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:41,087 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:41,087 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-06-05 04:57:41,087 INFO L430 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:41,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:41,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1557107456, now seen corresponding path program 1 times [2021-06-05 04:57:41,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:41,088 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882060695] [2021-06-05 04:57:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:41,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:41,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:41,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882060695] [2021-06-05 04:57:41,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882060695] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:41,105 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:41,105 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 04:57:41,105 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146934549] [2021-06-05 04:57:41,106 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:57:41,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:41,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:57:41,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 04:57:41,107 INFO L87 Difference]: Start difference. First operand 145 states and 462 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:41,124 INFO L93 Difference]: Finished difference Result 261 states and 729 transitions. [2021-06-05 04:57:41,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:41,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:57:41,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:41,125 INFO L225 Difference]: With dead ends: 261 [2021-06-05 04:57:41,125 INFO L226 Difference]: Without dead ends: 236 [2021-06-05 04:57:41,126 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:41,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-06-05 04:57:41,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 143. [2021-06-05 04:57:41,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 3.147887323943662) internal successors, (447), 142 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 447 transitions. [2021-06-05 04:57:41,130 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 447 transitions. Word has length 16 [2021-06-05 04:57:41,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:41,130 INFO L482 AbstractCegarLoop]: Abstraction has 143 states and 447 transitions. [2021-06-05 04:57:41,130 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,131 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 447 transitions. [2021-06-05 04:57:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:57:41,131 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:41,131 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:41,131 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-06-05 04:57:41,131 INFO L430 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:41,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:41,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1813140347, now seen corresponding path program 3 times [2021-06-05 04:57:41,132 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:41,132 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710853065] [2021-06-05 04:57:41,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:41,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:41,146 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:41,146 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710853065] [2021-06-05 04:57:41,146 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710853065] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:41,147 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:41,147 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 04:57:41,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616407469] [2021-06-05 04:57:41,147 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:57:41,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:41,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:57:41,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 04:57:41,148 INFO L87 Difference]: Start difference. First operand 143 states and 447 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:41,162 INFO L93 Difference]: Finished difference Result 255 states and 710 transitions. [2021-06-05 04:57:41,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 04:57:41,162 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:57:41,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:41,164 INFO L225 Difference]: With dead ends: 255 [2021-06-05 04:57:41,164 INFO L226 Difference]: Without dead ends: 233 [2021-06-05 04:57:41,164 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:41,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-06-05 04:57:41,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 143. [2021-06-05 04:57:41,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 3.084507042253521) internal successors, (438), 142 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 438 transitions. [2021-06-05 04:57:41,168 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 438 transitions. Word has length 16 [2021-06-05 04:57:41,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:41,168 INFO L482 AbstractCegarLoop]: Abstraction has 143 states and 438 transitions. [2021-06-05 04:57:41,169 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,169 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 438 transitions. [2021-06-05 04:57:41,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:57:41,169 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:41,169 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:41,169 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-06-05 04:57:41,169 INFO L430 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:41,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:41,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1420564495, now seen corresponding path program 2 times [2021-06-05 04:57:41,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:41,170 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784614737] [2021-06-05 04:57:41,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:41,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:41,187 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:41,187 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784614737] [2021-06-05 04:57:41,188 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784614737] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:41,188 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:41,188 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 04:57:41,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050027173] [2021-06-05 04:57:41,188 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:57:41,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:41,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:57:41,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 04:57:41,189 INFO L87 Difference]: Start difference. First operand 143 states and 438 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:41,206 INFO L93 Difference]: Finished difference Result 206 states and 573 transitions. [2021-06-05 04:57:41,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 04:57:41,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:57:41,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:41,208 INFO L225 Difference]: With dead ends: 206 [2021-06-05 04:57:41,208 INFO L226 Difference]: Without dead ends: 206 [2021-06-05 04:57:41,208 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:41,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-06-05 04:57:41,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 112. [2021-06-05 04:57:41,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.918918918918919) internal successors, (324), 111 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 324 transitions. [2021-06-05 04:57:41,212 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 324 transitions. Word has length 16 [2021-06-05 04:57:41,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:41,212 INFO L482 AbstractCegarLoop]: Abstraction has 112 states and 324 transitions. [2021-06-05 04:57:41,212 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,212 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 324 transitions. [2021-06-05 04:57:41,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:57:41,213 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:41,213 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:41,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-06-05 04:57:41,213 INFO L430 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:41,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:41,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1372165464, now seen corresponding path program 2 times [2021-06-05 04:57:41,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:41,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532725405] [2021-06-05 04:57:41,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:41,237 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:41,237 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532725405] [2021-06-05 04:57:41,237 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532725405] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:41,237 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:41,237 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 04:57:41,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053733461] [2021-06-05 04:57:41,237 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:57:41,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:41,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:57:41,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 04:57:41,238 INFO L87 Difference]: Start difference. First operand 112 states and 324 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:41,248 INFO L93 Difference]: Finished difference Result 163 states and 436 transitions. [2021-06-05 04:57:41,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 04:57:41,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:57:41,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:41,250 INFO L225 Difference]: With dead ends: 163 [2021-06-05 04:57:41,250 INFO L226 Difference]: Without dead ends: 144 [2021-06-05 04:57:41,250 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:41,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-06-05 04:57:41,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 108. [2021-06-05 04:57:41,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.9345794392523366) internal successors, (314), 107 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 314 transitions. [2021-06-05 04:57:41,253 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 314 transitions. Word has length 16 [2021-06-05 04:57:41,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:41,253 INFO L482 AbstractCegarLoop]: Abstraction has 108 states and 314 transitions. [2021-06-05 04:57:41,253 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,253 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 314 transitions. [2021-06-05 04:57:41,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-06-05 04:57:41,253 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:41,254 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:41,254 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-06-05 04:57:41,254 INFO L430 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:41,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:41,254 INFO L82 PathProgramCache]: Analyzing trace with hash -97814091, now seen corresponding path program 4 times [2021-06-05 04:57:41,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:41,254 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366347026] [2021-06-05 04:57:41,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:41,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:41,268 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:41,268 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366347026] [2021-06-05 04:57:41,268 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366347026] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:41,269 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:41,269 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-06-05 04:57:41,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437542807] [2021-06-05 04:57:41,269 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 04:57:41,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:41,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 04:57:41,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 04:57:41,270 INFO L87 Difference]: Start difference. First operand 108 states and 314 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:41,281 INFO L93 Difference]: Finished difference Result 123 states and 338 transitions. [2021-06-05 04:57:41,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 04:57:41,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-06-05 04:57:41,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:41,282 INFO L225 Difference]: With dead ends: 123 [2021-06-05 04:57:41,282 INFO L226 Difference]: Without dead ends: 108 [2021-06-05 04:57:41,283 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 04:57:41,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-06-05 04:57:41,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2021-06-05 04:57:41,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.878504672897196) internal successors, (308), 107 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 308 transitions. [2021-06-05 04:57:41,285 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 308 transitions. Word has length 16 [2021-06-05 04:57:41,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:41,286 INFO L482 AbstractCegarLoop]: Abstraction has 108 states and 308 transitions. [2021-06-05 04:57:41,286 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,286 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 308 transitions. [2021-06-05 04:57:41,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:41,286 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:41,286 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:41,286 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-06-05 04:57:41,286 INFO L430 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:41,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:41,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1361223606, now seen corresponding path program 1 times [2021-06-05 04:57:41,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:41,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813873252] [2021-06-05 04:57:41,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:41,325 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:41,325 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813873252] [2021-06-05 04:57:41,325 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813873252] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:41,325 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:41,325 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:41,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712292145] [2021-06-05 04:57:41,325 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:41,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:41,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:41,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:41,326 INFO L87 Difference]: Start difference. First operand 108 states and 308 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:41,413 INFO L93 Difference]: Finished difference Result 265 states and 721 transitions. [2021-06-05 04:57:41,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:41,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:41,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:41,414 INFO L225 Difference]: With dead ends: 265 [2021-06-05 04:57:41,414 INFO L226 Difference]: Without dead ends: 250 [2021-06-05 04:57:41,415 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 64.7ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:41,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-06-05 04:57:41,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 141. [2021-06-05 04:57:41,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 2.7928571428571427) internal successors, (391), 140 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 391 transitions. [2021-06-05 04:57:41,418 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 391 transitions. Word has length 17 [2021-06-05 04:57:41,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:41,419 INFO L482 AbstractCegarLoop]: Abstraction has 141 states and 391 transitions. [2021-06-05 04:57:41,419 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,419 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 391 transitions. [2021-06-05 04:57:41,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:41,419 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:41,419 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:41,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-06-05 04:57:41,420 INFO L430 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:41,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:41,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1726190618, now seen corresponding path program 2 times [2021-06-05 04:57:41,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:41,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854478685] [2021-06-05 04:57:41,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:41,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:41,459 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:41,459 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854478685] [2021-06-05 04:57:41,459 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854478685] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:41,459 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:41,459 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:41,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264182257] [2021-06-05 04:57:41,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:41,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:41,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:41,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:41,460 INFO L87 Difference]: Start difference. First operand 141 states and 391 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:41,555 INFO L93 Difference]: Finished difference Result 298 states and 795 transitions. [2021-06-05 04:57:41,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:41,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:41,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:41,557 INFO L225 Difference]: With dead ends: 298 [2021-06-05 04:57:41,558 INFO L226 Difference]: Without dead ends: 283 [2021-06-05 04:57:41,558 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 68.1ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:41,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-06-05 04:57:41,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 150. [2021-06-05 04:57:41,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.8053691275167787) internal successors, (418), 149 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 418 transitions. [2021-06-05 04:57:41,563 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 418 transitions. Word has length 17 [2021-06-05 04:57:41,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:41,563 INFO L482 AbstractCegarLoop]: Abstraction has 150 states and 418 transitions. [2021-06-05 04:57:41,563 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,563 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 418 transitions. [2021-06-05 04:57:41,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:41,564 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:41,564 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:41,564 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-06-05 04:57:41,564 INFO L430 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:41,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:41,564 INFO L82 PathProgramCache]: Analyzing trace with hash 870056290, now seen corresponding path program 3 times [2021-06-05 04:57:41,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:41,564 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578029165] [2021-06-05 04:57:41,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:41,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:41,620 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:41,621 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578029165] [2021-06-05 04:57:41,621 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578029165] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:41,621 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:41,621 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:41,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694780658] [2021-06-05 04:57:41,622 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:41,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:41,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:41,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:41,622 INFO L87 Difference]: Start difference. First operand 150 states and 418 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:41,722 INFO L93 Difference]: Finished difference Result 281 states and 763 transitions. [2021-06-05 04:57:41,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:41,722 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:41,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:41,723 INFO L225 Difference]: With dead ends: 281 [2021-06-05 04:57:41,723 INFO L226 Difference]: Without dead ends: 266 [2021-06-05 04:57:41,723 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 66.2ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:41,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-06-05 04:57:41,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 150. [2021-06-05 04:57:41,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.8053691275167787) internal successors, (418), 149 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 418 transitions. [2021-06-05 04:57:41,728 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 418 transitions. Word has length 17 [2021-06-05 04:57:41,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:41,728 INFO L482 AbstractCegarLoop]: Abstraction has 150 states and 418 transitions. [2021-06-05 04:57:41,728 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,728 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 418 transitions. [2021-06-05 04:57:41,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:41,730 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:41,730 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:41,730 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-06-05 04:57:41,731 INFO L430 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:41,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:41,731 INFO L82 PathProgramCache]: Analyzing trace with hash 2059322360, now seen corresponding path program 4 times [2021-06-05 04:57:41,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:41,731 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750010044] [2021-06-05 04:57:41,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:41,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:41,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:41,781 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750010044] [2021-06-05 04:57:41,781 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750010044] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:41,781 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:41,781 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:41,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761648988] [2021-06-05 04:57:41,782 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:41,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:41,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:41,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:41,782 INFO L87 Difference]: Start difference. First operand 150 states and 418 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:41,880 INFO L93 Difference]: Finished difference Result 289 states and 784 transitions. [2021-06-05 04:57:41,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:41,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:41,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:41,882 INFO L225 Difference]: With dead ends: 289 [2021-06-05 04:57:41,882 INFO L226 Difference]: Without dead ends: 274 [2021-06-05 04:57:41,882 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 66.7ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:41,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-06-05 04:57:41,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 159. [2021-06-05 04:57:41,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 2.7974683544303796) internal successors, (442), 158 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 442 transitions. [2021-06-05 04:57:41,887 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 442 transitions. Word has length 17 [2021-06-05 04:57:41,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:41,887 INFO L482 AbstractCegarLoop]: Abstraction has 159 states and 442 transitions. [2021-06-05 04:57:41,887 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 442 transitions. [2021-06-05 04:57:41,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:41,888 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:41,888 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:41,888 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-06-05 04:57:41,888 INFO L430 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:41,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:41,889 INFO L82 PathProgramCache]: Analyzing trace with hash 2033546876, now seen corresponding path program 5 times [2021-06-05 04:57:41,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:41,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081650203] [2021-06-05 04:57:41,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:41,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:41,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081650203] [2021-06-05 04:57:41,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081650203] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:41,950 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:41,950 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:41,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348726118] [2021-06-05 04:57:41,951 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:41,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:41,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:41,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:41,952 INFO L87 Difference]: Start difference. First operand 159 states and 442 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:42,072 INFO L93 Difference]: Finished difference Result 322 states and 859 transitions. [2021-06-05 04:57:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:42,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:42,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:42,074 INFO L225 Difference]: With dead ends: 322 [2021-06-05 04:57:42,075 INFO L226 Difference]: Without dead ends: 307 [2021-06-05 04:57:42,075 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 79.4ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:42,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-06-05 04:57:42,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 162. [2021-06-05 04:57:42,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.8322981366459627) internal successors, (456), 161 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 456 transitions. [2021-06-05 04:57:42,079 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 456 transitions. Word has length 17 [2021-06-05 04:57:42,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:42,080 INFO L482 AbstractCegarLoop]: Abstraction has 162 states and 456 transitions. [2021-06-05 04:57:42,080 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,080 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 456 transitions. [2021-06-05 04:57:42,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:42,080 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:42,080 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:42,080 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-06-05 04:57:42,081 INFO L430 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:42,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:42,081 INFO L82 PathProgramCache]: Analyzing trace with hash 334826488, now seen corresponding path program 6 times [2021-06-05 04:57:42,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:42,081 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669196345] [2021-06-05 04:57:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:42,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:42,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669196345] [2021-06-05 04:57:42,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669196345] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:42,119 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:42,119 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:42,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159858973] [2021-06-05 04:57:42,119 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:42,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:42,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:42,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:42,120 INFO L87 Difference]: Start difference. First operand 162 states and 456 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:42,218 INFO L93 Difference]: Finished difference Result 299 states and 814 transitions. [2021-06-05 04:57:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:42,218 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:42,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:42,219 INFO L225 Difference]: With dead ends: 299 [2021-06-05 04:57:42,219 INFO L226 Difference]: Without dead ends: 284 [2021-06-05 04:57:42,220 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 64.8ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:42,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-06-05 04:57:42,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 159. [2021-06-05 04:57:42,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 2.7974683544303796) internal successors, (442), 158 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 442 transitions. [2021-06-05 04:57:42,224 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 442 transitions. Word has length 17 [2021-06-05 04:57:42,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:42,224 INFO L482 AbstractCegarLoop]: Abstraction has 159 states and 442 transitions. [2021-06-05 04:57:42,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,224 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 442 transitions. [2021-06-05 04:57:42,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:42,225 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:42,225 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:42,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-06-05 04:57:42,225 INFO L430 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:42,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:42,226 INFO L82 PathProgramCache]: Analyzing trace with hash -2035892590, now seen corresponding path program 7 times [2021-06-05 04:57:42,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:42,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170252278] [2021-06-05 04:57:42,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:42,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:42,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:42,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170252278] [2021-06-05 04:57:42,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170252278] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:42,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:42,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:42,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790748989] [2021-06-05 04:57:42,260 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:42,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:42,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:42,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:42,261 INFO L87 Difference]: Start difference. First operand 159 states and 442 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:42,356 INFO L93 Difference]: Finished difference Result 389 states and 1040 transitions. [2021-06-05 04:57:42,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:42,357 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:42,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:42,358 INFO L225 Difference]: With dead ends: 389 [2021-06-05 04:57:42,359 INFO L226 Difference]: Without dead ends: 374 [2021-06-05 04:57:42,359 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 56.7ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:42,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2021-06-05 04:57:42,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 166. [2021-06-05 04:57:42,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.8484848484848486) internal successors, (470), 165 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 470 transitions. [2021-06-05 04:57:42,364 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 470 transitions. Word has length 17 [2021-06-05 04:57:42,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:42,364 INFO L482 AbstractCegarLoop]: Abstraction has 166 states and 470 transitions. [2021-06-05 04:57:42,364 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,365 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 470 transitions. [2021-06-05 04:57:42,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:42,365 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:42,365 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:42,365 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-06-05 04:57:42,365 INFO L430 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:42,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:42,366 INFO L82 PathProgramCache]: Analyzing trace with hash -828339518, now seen corresponding path program 8 times [2021-06-05 04:57:42,366 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:42,366 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131251695] [2021-06-05 04:57:42,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:42,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:42,405 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:42,405 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131251695] [2021-06-05 04:57:42,405 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131251695] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:42,405 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:42,405 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:42,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855734466] [2021-06-05 04:57:42,405 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:42,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:42,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:42,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:42,406 INFO L87 Difference]: Start difference. First operand 166 states and 470 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:42,505 INFO L93 Difference]: Finished difference Result 398 states and 1066 transitions. [2021-06-05 04:57:42,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:42,506 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:42,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:42,507 INFO L225 Difference]: With dead ends: 398 [2021-06-05 04:57:42,507 INFO L226 Difference]: Without dead ends: 383 [2021-06-05 04:57:42,507 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 64.6ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:42,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2021-06-05 04:57:42,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 169. [2021-06-05 04:57:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.880952380952381) internal successors, (484), 168 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 484 transitions. [2021-06-05 04:57:42,513 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 484 transitions. Word has length 17 [2021-06-05 04:57:42,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:42,513 INFO L482 AbstractCegarLoop]: Abstraction has 169 states and 484 transitions. [2021-06-05 04:57:42,513 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,513 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 484 transitions. [2021-06-05 04:57:42,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:42,514 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:42,514 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:42,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-06-05 04:57:42,514 INFO L430 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:42,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:42,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1767907390, now seen corresponding path program 9 times [2021-06-05 04:57:42,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:42,515 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34763041] [2021-06-05 04:57:42,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:42,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:42,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:42,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34763041] [2021-06-05 04:57:42,554 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34763041] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:42,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:42,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:42,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196840829] [2021-06-05 04:57:42,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:42,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:42,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:42,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:42,556 INFO L87 Difference]: Start difference. First operand 169 states and 484 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:42,647 INFO L93 Difference]: Finished difference Result 405 states and 1082 transitions. [2021-06-05 04:57:42,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:42,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:42,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:42,657 INFO L225 Difference]: With dead ends: 405 [2021-06-05 04:57:42,657 INFO L226 Difference]: Without dead ends: 390 [2021-06-05 04:57:42,658 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:42,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-06-05 04:57:42,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 161. [2021-06-05 04:57:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 2.825) internal successors, (452), 160 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 452 transitions. [2021-06-05 04:57:42,664 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 452 transitions. Word has length 17 [2021-06-05 04:57:42,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:42,665 INFO L482 AbstractCegarLoop]: Abstraction has 161 states and 452 transitions. [2021-06-05 04:57:42,665 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,665 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 452 transitions. [2021-06-05 04:57:42,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:42,668 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:42,668 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:42,668 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-06-05 04:57:42,668 INFO L430 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:42,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:42,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1043349262, now seen corresponding path program 10 times [2021-06-05 04:57:42,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:42,670 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744427358] [2021-06-05 04:57:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:42,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:42,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:42,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744427358] [2021-06-05 04:57:42,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744427358] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:42,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:42,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:42,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067543523] [2021-06-05 04:57:42,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:42,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:42,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:42,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:42,713 INFO L87 Difference]: Start difference. First operand 161 states and 452 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:42,793 INFO L93 Difference]: Finished difference Result 340 states and 918 transitions. [2021-06-05 04:57:42,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:42,794 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:42,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:42,795 INFO L225 Difference]: With dead ends: 340 [2021-06-05 04:57:42,795 INFO L226 Difference]: Without dead ends: 325 [2021-06-05 04:57:42,796 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 55.6ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:42,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-06-05 04:57:42,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 165. [2021-06-05 04:57:42,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 2.841463414634146) internal successors, (466), 164 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 466 transitions. [2021-06-05 04:57:42,800 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 466 transitions. Word has length 17 [2021-06-05 04:57:42,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:42,801 INFO L482 AbstractCegarLoop]: Abstraction has 165 states and 466 transitions. [2021-06-05 04:57:42,801 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,801 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 466 transitions. [2021-06-05 04:57:42,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:42,801 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:42,801 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:42,802 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-06-05 04:57:42,802 INFO L430 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:42,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:42,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1480345592, now seen corresponding path program 11 times [2021-06-05 04:57:42,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:42,802 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506677982] [2021-06-05 04:57:42,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:42,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:42,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:42,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506677982] [2021-06-05 04:57:42,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506677982] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:42,842 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:42,843 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:42,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739911686] [2021-06-05 04:57:42,843 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:42,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:42,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:42,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:42,844 INFO L87 Difference]: Start difference. First operand 165 states and 466 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:42,943 INFO L93 Difference]: Finished difference Result 335 states and 909 transitions. [2021-06-05 04:57:42,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:42,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:42,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:42,945 INFO L225 Difference]: With dead ends: 335 [2021-06-05 04:57:42,945 INFO L226 Difference]: Without dead ends: 320 [2021-06-05 04:57:42,945 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 64.8ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:42,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2021-06-05 04:57:42,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 171. [2021-06-05 04:57:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.8411764705882354) internal successors, (483), 170 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 483 transitions. [2021-06-05 04:57:42,950 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 483 transitions. Word has length 17 [2021-06-05 04:57:42,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:42,950 INFO L482 AbstractCegarLoop]: Abstraction has 171 states and 483 transitions. [2021-06-05 04:57:42,950 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:42,950 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 483 transitions. [2021-06-05 04:57:42,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:42,951 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:42,951 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:42,951 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-06-05 04:57:42,951 INFO L430 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:42,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:42,952 INFO L82 PathProgramCache]: Analyzing trace with hash -145439044, now seen corresponding path program 12 times [2021-06-05 04:57:42,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:42,952 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101359283] [2021-06-05 04:57:42,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:42,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:42,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101359283] [2021-06-05 04:57:42,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101359283] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:42,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:42,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:42,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505669652] [2021-06-05 04:57:42,989 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:42,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:42,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:42,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:42,990 INFO L87 Difference]: Start difference. First operand 171 states and 483 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:43,088 INFO L93 Difference]: Finished difference Result 318 states and 879 transitions. [2021-06-05 04:57:43,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:43,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:43,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:43,098 INFO L225 Difference]: With dead ends: 318 [2021-06-05 04:57:43,098 INFO L226 Difference]: Without dead ends: 303 [2021-06-05 04:57:43,098 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 69.7ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:43,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-06-05 04:57:43,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 171. [2021-06-05 04:57:43,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.8411764705882354) internal successors, (483), 170 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 483 transitions. [2021-06-05 04:57:43,103 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 483 transitions. Word has length 17 [2021-06-05 04:57:43,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:43,104 INFO L482 AbstractCegarLoop]: Abstraction has 171 states and 483 transitions. [2021-06-05 04:57:43,104 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,104 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 483 transitions. [2021-06-05 04:57:43,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:43,104 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:43,104 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:43,105 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-06-05 04:57:43,105 INFO L430 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:43,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:43,105 INFO L82 PathProgramCache]: Analyzing trace with hash 161256120, now seen corresponding path program 13 times [2021-06-05 04:57:43,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:43,105 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571461260] [2021-06-05 04:57:43,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:43,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:43,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571461260] [2021-06-05 04:57:43,151 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571461260] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:43,151 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:43,151 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:43,151 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248324416] [2021-06-05 04:57:43,152 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:43,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:43,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:43,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:43,152 INFO L87 Difference]: Start difference. First operand 171 states and 483 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:43,245 INFO L93 Difference]: Finished difference Result 385 states and 1046 transitions. [2021-06-05 04:57:43,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:43,245 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:43,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:43,246 INFO L225 Difference]: With dead ends: 385 [2021-06-05 04:57:43,246 INFO L226 Difference]: Without dead ends: 370 [2021-06-05 04:57:43,247 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 56.3ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:43,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-06-05 04:57:43,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 174. [2021-06-05 04:57:43,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.878612716763006) internal successors, (498), 173 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2021-06-05 04:57:43,251 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2021-06-05 04:57:43,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:43,252 INFO L482 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2021-06-05 04:57:43,252 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,252 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2021-06-05 04:57:43,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:43,252 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:43,252 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:43,252 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-06-05 04:57:43,253 INFO L430 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:43,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:43,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1057379240, now seen corresponding path program 14 times [2021-06-05 04:57:43,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:43,253 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728237328] [2021-06-05 04:57:43,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:43,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:43,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728237328] [2021-06-05 04:57:43,295 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728237328] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:43,295 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:43,295 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:43,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661018280] [2021-06-05 04:57:43,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:43,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:43,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:43,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:43,296 INFO L87 Difference]: Start difference. First operand 174 states and 498 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:43,379 INFO L93 Difference]: Finished difference Result 383 states and 1039 transitions. [2021-06-05 04:57:43,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:43,380 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:43,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:43,382 INFO L225 Difference]: With dead ends: 383 [2021-06-05 04:57:43,382 INFO L226 Difference]: Without dead ends: 368 [2021-06-05 04:57:43,382 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 56.7ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:43,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-06-05 04:57:43,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 174. [2021-06-05 04:57:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.878612716763006) internal successors, (498), 173 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2021-06-05 04:57:43,387 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2021-06-05 04:57:43,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:43,388 INFO L482 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2021-06-05 04:57:43,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,388 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2021-06-05 04:57:43,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:43,388 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:43,389 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:43,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-06-05 04:57:43,389 INFO L430 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:43,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:43,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1150316668, now seen corresponding path program 15 times [2021-06-05 04:57:43,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:43,389 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172255573] [2021-06-05 04:57:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:43,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:43,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:43,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:43,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172255573] [2021-06-05 04:57:43,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172255573] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:43,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:43,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:43,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684830742] [2021-06-05 04:57:43,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:43,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:43,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:43,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:43,430 INFO L87 Difference]: Start difference. First operand 174 states and 498 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:43,510 INFO L93 Difference]: Finished difference Result 392 states and 1055 transitions. [2021-06-05 04:57:43,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:43,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:43,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:43,512 INFO L225 Difference]: With dead ends: 392 [2021-06-05 04:57:43,512 INFO L226 Difference]: Without dead ends: 377 [2021-06-05 04:57:43,512 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 48.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:43,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-06-05 04:57:43,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 177. [2021-06-05 04:57:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.909090909090909) internal successors, (512), 176 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 512 transitions. [2021-06-05 04:57:43,517 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 512 transitions. Word has length 17 [2021-06-05 04:57:43,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:43,517 INFO L482 AbstractCegarLoop]: Abstraction has 177 states and 512 transitions. [2021-06-05 04:57:43,517 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,517 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 512 transitions. [2021-06-05 04:57:43,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:43,518 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:43,518 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:43,518 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-06-05 04:57:43,518 INFO L430 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:43,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:43,518 INFO L82 PathProgramCache]: Analyzing trace with hash -19872328, now seen corresponding path program 16 times [2021-06-05 04:57:43,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:43,519 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006257548] [2021-06-05 04:57:43,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:43,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:43,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:43,572 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:43,572 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006257548] [2021-06-05 04:57:43,572 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006257548] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:43,572 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:43,572 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:43,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766815364] [2021-06-05 04:57:43,573 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:43,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:43,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:43,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:43,573 INFO L87 Difference]: Start difference. First operand 177 states and 512 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:43,663 INFO L93 Difference]: Finished difference Result 376 states and 1032 transitions. [2021-06-05 04:57:43,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:43,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:43,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:43,669 INFO L225 Difference]: With dead ends: 376 [2021-06-05 04:57:43,669 INFO L226 Difference]: Without dead ends: 361 [2021-06-05 04:57:43,669 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 59.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:43,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2021-06-05 04:57:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 174. [2021-06-05 04:57:43,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.878612716763006) internal successors, (498), 173 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2021-06-05 04:57:43,674 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2021-06-05 04:57:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:43,674 INFO L482 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2021-06-05 04:57:43,674 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,674 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2021-06-05 04:57:43,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:43,675 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:43,675 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:43,675 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-06-05 04:57:43,675 INFO L430 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:43,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:43,676 INFO L82 PathProgramCache]: Analyzing trace with hash -36809380, now seen corresponding path program 17 times [2021-06-05 04:57:43,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:43,676 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789629394] [2021-06-05 04:57:43,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:43,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:43,712 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:43,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789629394] [2021-06-05 04:57:43,712 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789629394] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:43,712 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:43,712 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:43,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834203818] [2021-06-05 04:57:43,713 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:43,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:43,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:43,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:43,713 INFO L87 Difference]: Start difference. First operand 174 states and 498 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:43,804 INFO L93 Difference]: Finished difference Result 364 states and 991 transitions. [2021-06-05 04:57:43,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:43,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:43,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:43,806 INFO L225 Difference]: With dead ends: 364 [2021-06-05 04:57:43,806 INFO L226 Difference]: Without dead ends: 349 [2021-06-05 04:57:43,807 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:43,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-06-05 04:57:43,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 176. [2021-06-05 04:57:43,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.8971428571428572) internal successors, (507), 175 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 507 transitions. [2021-06-05 04:57:43,811 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 507 transitions. Word has length 17 [2021-06-05 04:57:43,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:43,812 INFO L482 AbstractCegarLoop]: Abstraction has 176 states and 507 transitions. [2021-06-05 04:57:43,812 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,812 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 507 transitions. [2021-06-05 04:57:43,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:43,812 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:43,812 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:43,813 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-06-05 04:57:43,813 INFO L430 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:43,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:43,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1103474456, now seen corresponding path program 18 times [2021-06-05 04:57:43,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:43,813 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378711590] [2021-06-05 04:57:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:43,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:43,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:43,849 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378711590] [2021-06-05 04:57:43,849 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378711590] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:43,850 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:43,850 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:43,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611071066] [2021-06-05 04:57:43,850 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:43,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:43,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:43,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:43,851 INFO L87 Difference]: Start difference. First operand 176 states and 507 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:43,938 INFO L93 Difference]: Finished difference Result 343 states and 953 transitions. [2021-06-05 04:57:43,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:43,938 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:43,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:43,940 INFO L225 Difference]: With dead ends: 343 [2021-06-05 04:57:43,940 INFO L226 Difference]: Without dead ends: 328 [2021-06-05 04:57:43,940 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 52.7ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:43,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-06-05 04:57:43,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 174. [2021-06-05 04:57:43,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.878612716763006) internal successors, (498), 173 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2021-06-05 04:57:43,945 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2021-06-05 04:57:43,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:43,945 INFO L482 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2021-06-05 04:57:43,945 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:43,945 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2021-06-05 04:57:43,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:43,946 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:43,946 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:43,946 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-06-05 04:57:43,946 INFO L430 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:43,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:43,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1622951230, now seen corresponding path program 19 times [2021-06-05 04:57:43,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:43,947 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634087135] [2021-06-05 04:57:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:43,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:43,981 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:43,981 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634087135] [2021-06-05 04:57:43,981 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634087135] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:43,981 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:43,981 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:43,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411535241] [2021-06-05 04:57:43,982 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:43,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:43,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:43,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:43,982 INFO L87 Difference]: Start difference. First operand 174 states and 498 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:44,074 INFO L93 Difference]: Finished difference Result 360 states and 983 transitions. [2021-06-05 04:57:44,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:44,075 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:44,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:44,076 INFO L225 Difference]: With dead ends: 360 [2021-06-05 04:57:44,076 INFO L226 Difference]: Without dead ends: 345 [2021-06-05 04:57:44,076 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 64.0ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:44,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2021-06-05 04:57:44,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 177. [2021-06-05 04:57:44,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.897727272727273) internal successors, (510), 176 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2021-06-05 04:57:44,081 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2021-06-05 04:57:44,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:44,081 INFO L482 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2021-06-05 04:57:44,081 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,081 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2021-06-05 04:57:44,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:44,082 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:44,082 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:44,082 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-06-05 04:57:44,082 INFO L430 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:44,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:44,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1422092646, now seen corresponding path program 20 times [2021-06-05 04:57:44,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:44,083 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701112245] [2021-06-05 04:57:44,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:44,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:44,123 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:44,123 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701112245] [2021-06-05 04:57:44,123 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701112245] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:44,123 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:44,124 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:44,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616924718] [2021-06-05 04:57:44,124 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:44,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:44,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:44,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:44,128 INFO L87 Difference]: Start difference. First operand 177 states and 510 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:44,234 INFO L93 Difference]: Finished difference Result 377 states and 1017 transitions. [2021-06-05 04:57:44,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:44,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:44,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:44,236 INFO L225 Difference]: With dead ends: 377 [2021-06-05 04:57:44,236 INFO L226 Difference]: Without dead ends: 362 [2021-06-05 04:57:44,236 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 60.1ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:44,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-06-05 04:57:44,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 179. [2021-06-05 04:57:44,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.9157303370786516) internal successors, (519), 178 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 519 transitions. [2021-06-05 04:57:44,241 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 519 transitions. Word has length 17 [2021-06-05 04:57:44,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:44,241 INFO L482 AbstractCegarLoop]: Abstraction has 179 states and 519 transitions. [2021-06-05 04:57:44,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,241 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 519 transitions. [2021-06-05 04:57:44,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:44,242 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:44,242 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:44,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-06-05 04:57:44,242 INFO L430 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:44,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:44,242 INFO L82 PathProgramCache]: Analyzing trace with hash 203457286, now seen corresponding path program 21 times [2021-06-05 04:57:44,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:44,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553860285] [2021-06-05 04:57:44,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:44,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:44,288 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:44,289 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553860285] [2021-06-05 04:57:44,289 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553860285] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:44,289 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:44,289 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:44,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124760956] [2021-06-05 04:57:44,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:44,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:44,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:44,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:44,290 INFO L87 Difference]: Start difference. First operand 179 states and 519 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:44,381 INFO L93 Difference]: Finished difference Result 354 states and 972 transitions. [2021-06-05 04:57:44,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:44,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:44,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:44,383 INFO L225 Difference]: With dead ends: 354 [2021-06-05 04:57:44,383 INFO L226 Difference]: Without dead ends: 339 [2021-06-05 04:57:44,383 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 58.6ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:44,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-06-05 04:57:44,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 177. [2021-06-05 04:57:44,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.897727272727273) internal successors, (510), 176 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2021-06-05 04:57:44,388 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2021-06-05 04:57:44,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:44,388 INFO L482 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2021-06-05 04:57:44,388 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,388 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2021-06-05 04:57:44,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:44,389 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:44,389 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:44,389 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-06-05 04:57:44,389 INFO L430 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:44,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:44,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1026845314, now seen corresponding path program 22 times [2021-06-05 04:57:44,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:44,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639406524] [2021-06-05 04:57:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:44,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:44,427 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:44,427 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639406524] [2021-06-05 04:57:44,427 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639406524] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:44,427 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:44,427 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:44,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209268170] [2021-06-05 04:57:44,427 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:44,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:44,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:44,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:44,428 INFO L87 Difference]: Start difference. First operand 177 states and 510 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:44,529 INFO L93 Difference]: Finished difference Result 409 states and 1106 transitions. [2021-06-05 04:57:44,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:44,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:44,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:44,539 INFO L225 Difference]: With dead ends: 409 [2021-06-05 04:57:44,539 INFO L226 Difference]: Without dead ends: 394 [2021-06-05 04:57:44,540 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 70.5ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:44,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-06-05 04:57:44,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 180. [2021-06-05 04:57:44,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.910614525139665) internal successors, (521), 179 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 521 transitions. [2021-06-05 04:57:44,546 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 521 transitions. Word has length 17 [2021-06-05 04:57:44,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:44,546 INFO L482 AbstractCegarLoop]: Abstraction has 180 states and 521 transitions. [2021-06-05 04:57:44,546 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,547 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 521 transitions. [2021-06-05 04:57:44,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:44,549 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:44,549 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:44,550 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-06-05 04:57:44,551 INFO L430 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:44,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:44,551 INFO L82 PathProgramCache]: Analyzing trace with hash -1848016830, now seen corresponding path program 23 times [2021-06-05 04:57:44,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:44,551 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163257848] [2021-06-05 04:57:44,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:44,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:44,593 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:44,593 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163257848] [2021-06-05 04:57:44,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163257848] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:44,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:44,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:44,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170706025] [2021-06-05 04:57:44,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:44,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:44,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:44,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:44,595 INFO L87 Difference]: Start difference. First operand 180 states and 521 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:44,712 INFO L93 Difference]: Finished difference Result 407 states and 1110 transitions. [2021-06-05 04:57:44,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:44,712 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:44,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:44,714 INFO L225 Difference]: With dead ends: 407 [2021-06-05 04:57:44,714 INFO L226 Difference]: Without dead ends: 392 [2021-06-05 04:57:44,714 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 67.9ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:44,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-06-05 04:57:44,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 183. [2021-06-05 04:57:44,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.9395604395604398) internal successors, (535), 182 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 535 transitions. [2021-06-05 04:57:44,720 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 535 transitions. Word has length 17 [2021-06-05 04:57:44,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:44,720 INFO L482 AbstractCegarLoop]: Abstraction has 183 states and 535 transitions. [2021-06-05 04:57:44,720 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,720 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 535 transitions. [2021-06-05 04:57:44,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:44,720 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:44,721 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:44,721 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-06-05 04:57:44,721 INFO L430 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:44,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:44,721 INFO L82 PathProgramCache]: Analyzing trace with hash 748230078, now seen corresponding path program 24 times [2021-06-05 04:57:44,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:44,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572506624] [2021-06-05 04:57:44,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:44,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:44,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:44,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572506624] [2021-06-05 04:57:44,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572506624] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:44,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:44,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:44,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39590402] [2021-06-05 04:57:44,759 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:44,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:44,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:44,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:44,759 INFO L87 Difference]: Start difference. First operand 183 states and 535 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:44,842 INFO L93 Difference]: Finished difference Result 384 states and 1065 transitions. [2021-06-05 04:57:44,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:44,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:44,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:44,843 INFO L225 Difference]: With dead ends: 384 [2021-06-05 04:57:44,844 INFO L226 Difference]: Without dead ends: 369 [2021-06-05 04:57:44,844 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 54.2ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:44,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-06-05 04:57:44,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 177. [2021-06-05 04:57:44,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.897727272727273) internal successors, (510), 176 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2021-06-05 04:57:44,849 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2021-06-05 04:57:44,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:44,849 INFO L482 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2021-06-05 04:57:44,849 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,849 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2021-06-05 04:57:44,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:44,849 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:44,850 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:44,850 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-06-05 04:57:44,850 INFO L430 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:44,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:44,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1951172510, now seen corresponding path program 25 times [2021-06-05 04:57:44,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:44,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664035454] [2021-06-05 04:57:44,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:44,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:44,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:44,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664035454] [2021-06-05 04:57:44,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664035454] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:44,886 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:44,886 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:44,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68910052] [2021-06-05 04:57:44,886 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:44,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:44,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:44,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:44,886 INFO L87 Difference]: Start difference. First operand 177 states and 510 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:44,986 INFO L93 Difference]: Finished difference Result 403 states and 1103 transitions. [2021-06-05 04:57:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:44,986 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:44,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:44,988 INFO L225 Difference]: With dead ends: 403 [2021-06-05 04:57:44,988 INFO L226 Difference]: Without dead ends: 388 [2021-06-05 04:57:44,988 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 49.6ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:44,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-06-05 04:57:44,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 180. [2021-06-05 04:57:44,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9329608938547485) internal successors, (525), 179 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 525 transitions. [2021-06-05 04:57:44,994 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 525 transitions. Word has length 17 [2021-06-05 04:57:44,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:44,994 INFO L482 AbstractCegarLoop]: Abstraction has 180 states and 525 transitions. [2021-06-05 04:57:44,994 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:44,994 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 525 transitions. [2021-06-05 04:57:44,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:44,995 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:44,995 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:44,995 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-06-05 04:57:44,995 INFO L430 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:44,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:44,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1125159426, now seen corresponding path program 26 times [2021-06-05 04:57:44,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:44,996 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411469038] [2021-06-05 04:57:44,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:44,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:45,031 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:45,031 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411469038] [2021-06-05 04:57:45,031 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411469038] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:45,031 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:45,031 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:45,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352232054] [2021-06-05 04:57:45,031 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:45,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:45,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:45,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:45,032 INFO L87 Difference]: Start difference. First operand 180 states and 525 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:45,132 INFO L93 Difference]: Finished difference Result 401 states and 1096 transitions. [2021-06-05 04:57:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:45,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:45,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:45,134 INFO L225 Difference]: With dead ends: 401 [2021-06-05 04:57:45,134 INFO L226 Difference]: Without dead ends: 386 [2021-06-05 04:57:45,134 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:45,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-06-05 04:57:45,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 178. [2021-06-05 04:57:45,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.9152542372881354) internal successors, (516), 177 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 516 transitions. [2021-06-05 04:57:45,139 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 516 transitions. Word has length 17 [2021-06-05 04:57:45,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:45,139 INFO L482 AbstractCegarLoop]: Abstraction has 178 states and 516 transitions. [2021-06-05 04:57:45,139 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,139 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 516 transitions. [2021-06-05 04:57:45,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:45,140 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:45,140 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:45,140 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-06-05 04:57:45,140 INFO L430 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:45,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:45,141 INFO L82 PathProgramCache]: Analyzing trace with hash -962111962, now seen corresponding path program 27 times [2021-06-05 04:57:45,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:45,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489700954] [2021-06-05 04:57:45,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:45,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:45,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:45,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489700954] [2021-06-05 04:57:45,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489700954] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:45,196 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:45,196 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:45,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226099844] [2021-06-05 04:57:45,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:45,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:45,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:45,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:45,197 INFO L87 Difference]: Start difference. First operand 178 states and 516 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:45,307 INFO L93 Difference]: Finished difference Result 395 states and 1075 transitions. [2021-06-05 04:57:45,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:45,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:45,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:45,309 INFO L225 Difference]: With dead ends: 395 [2021-06-05 04:57:45,309 INFO L226 Difference]: Without dead ends: 380 [2021-06-05 04:57:45,309 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 59.8ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:45,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-06-05 04:57:45,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 181. [2021-06-05 04:57:45,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.9444444444444446) internal successors, (530), 180 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 530 transitions. [2021-06-05 04:57:45,314 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 530 transitions. Word has length 17 [2021-06-05 04:57:45,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:45,315 INFO L482 AbstractCegarLoop]: Abstraction has 181 states and 530 transitions. [2021-06-05 04:57:45,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,315 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 530 transitions. [2021-06-05 04:57:45,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:45,315 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:45,315 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:45,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-06-05 04:57:45,316 INFO L430 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:45,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:45,316 INFO L82 PathProgramCache]: Analyzing trace with hash -2132300958, now seen corresponding path program 28 times [2021-06-05 04:57:45,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:45,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981143551] [2021-06-05 04:57:45,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:45,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:45,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:45,367 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981143551] [2021-06-05 04:57:45,367 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981143551] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:45,367 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:45,367 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:45,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574306416] [2021-06-05 04:57:45,367 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:45,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:45,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:45,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:45,368 INFO L87 Difference]: Start difference. First operand 181 states and 530 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:45,462 INFO L93 Difference]: Finished difference Result 379 states and 1052 transitions. [2021-06-05 04:57:45,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:45,463 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:45,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:45,463 INFO L225 Difference]: With dead ends: 379 [2021-06-05 04:57:45,463 INFO L226 Difference]: Without dead ends: 364 [2021-06-05 04:57:45,464 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 53.7ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:45,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2021-06-05 04:57:45,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 178. [2021-06-05 04:57:45,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.9152542372881354) internal successors, (516), 177 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 516 transitions. [2021-06-05 04:57:45,467 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 516 transitions. Word has length 17 [2021-06-05 04:57:45,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:45,468 INFO L482 AbstractCegarLoop]: Abstraction has 178 states and 516 transitions. [2021-06-05 04:57:45,468 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,468 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 516 transitions. [2021-06-05 04:57:45,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:45,468 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:45,468 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:45,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-06-05 04:57:45,469 INFO L430 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:45,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:45,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2145729286, now seen corresponding path program 29 times [2021-06-05 04:57:45,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:45,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722470906] [2021-06-05 04:57:45,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:45,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:45,515 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:45,515 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722470906] [2021-06-05 04:57:45,515 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722470906] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:45,515 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:45,515 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:45,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556449918] [2021-06-05 04:57:45,516 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:45,516 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:45,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:45,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:45,516 INFO L87 Difference]: Start difference. First operand 178 states and 516 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:45,599 INFO L93 Difference]: Finished difference Result 363 states and 1003 transitions. [2021-06-05 04:57:45,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:45,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:45,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:45,600 INFO L225 Difference]: With dead ends: 363 [2021-06-05 04:57:45,600 INFO L226 Difference]: Without dead ends: 348 [2021-06-05 04:57:45,600 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 49.0ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:45,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-06-05 04:57:45,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 180. [2021-06-05 04:57:45,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9329608938547485) internal successors, (525), 179 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 525 transitions. [2021-06-05 04:57:45,604 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 525 transitions. Word has length 17 [2021-06-05 04:57:45,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:45,604 INFO L482 AbstractCegarLoop]: Abstraction has 180 states and 525 transitions. [2021-06-05 04:57:45,604 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 525 transitions. [2021-06-05 04:57:45,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:45,605 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:45,605 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:45,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-06-05 04:57:45,605 INFO L430 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:45,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:45,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1008954174, now seen corresponding path program 30 times [2021-06-05 04:57:45,606 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:45,606 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719617555] [2021-06-05 04:57:45,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:45,647 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:45,647 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719617555] [2021-06-05 04:57:45,647 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719617555] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:45,647 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:45,647 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:45,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237182849] [2021-06-05 04:57:45,647 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:45,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:45,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:45,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:45,648 INFO L87 Difference]: Start difference. First operand 180 states and 525 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:45,735 INFO L93 Difference]: Finished difference Result 342 states and 965 transitions. [2021-06-05 04:57:45,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:45,735 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:45,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:45,736 INFO L225 Difference]: With dead ends: 342 [2021-06-05 04:57:45,736 INFO L226 Difference]: Without dead ends: 327 [2021-06-05 04:57:45,736 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 52.4ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:45,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-06-05 04:57:45,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 177. [2021-06-05 04:57:45,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.897727272727273) internal successors, (510), 176 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2021-06-05 04:57:45,741 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2021-06-05 04:57:45,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:45,741 INFO L482 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2021-06-05 04:57:45,741 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,741 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2021-06-05 04:57:45,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:45,741 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:45,742 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:45,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-06-05 04:57:45,742 INFO L430 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:45,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:45,742 INFO L82 PathProgramCache]: Analyzing trace with hash 1057121422, now seen corresponding path program 31 times [2021-06-05 04:57:45,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:45,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120810757] [2021-06-05 04:57:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:45,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:45,783 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:45,783 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120810757] [2021-06-05 04:57:45,783 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120810757] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:45,783 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:45,783 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:45,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379805260] [2021-06-05 04:57:45,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:45,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:45,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:45,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:45,784 INFO L87 Difference]: Start difference. First operand 177 states and 510 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:45,862 INFO L93 Difference]: Finished difference Result 377 states and 1036 transitions. [2021-06-05 04:57:45,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:45,862 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:45,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:45,863 INFO L225 Difference]: With dead ends: 377 [2021-06-05 04:57:45,863 INFO L226 Difference]: Without dead ends: 362 [2021-06-05 04:57:45,863 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 58.1ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:45,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-06-05 04:57:45,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 186. [2021-06-05 04:57:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.9513513513513514) internal successors, (546), 185 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 546 transitions. [2021-06-05 04:57:45,868 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 546 transitions. Word has length 17 [2021-06-05 04:57:45,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:45,868 INFO L482 AbstractCegarLoop]: Abstraction has 186 states and 546 transitions. [2021-06-05 04:57:45,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:45,868 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 546 transitions. [2021-06-05 04:57:45,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:45,869 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:45,869 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:45,869 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-06-05 04:57:45,869 INFO L430 AbstractCegarLoop]: === Iteration 64 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:45,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:45,869 INFO L82 PathProgramCache]: Analyzing trace with hash -2030292802, now seen corresponding path program 32 times [2021-06-05 04:57:45,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:45,869 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085312906] [2021-06-05 04:57:45,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:45,905 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:45,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085312906] [2021-06-05 04:57:45,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085312906] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:45,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:45,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:45,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053153297] [2021-06-05 04:57:45,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:45,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:45,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:45,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:45,906 INFO L87 Difference]: Start difference. First operand 186 states and 546 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:46,005 INFO L93 Difference]: Finished difference Result 386 states and 1062 transitions. [2021-06-05 04:57:46,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:46,005 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:46,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:46,006 INFO L225 Difference]: With dead ends: 386 [2021-06-05 04:57:46,006 INFO L226 Difference]: Without dead ends: 371 [2021-06-05 04:57:46,006 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 69.0ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:46,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-06-05 04:57:46,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 189. [2021-06-05 04:57:46,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.978723404255319) internal successors, (560), 188 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 560 transitions. [2021-06-05 04:57:46,011 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 560 transitions. Word has length 17 [2021-06-05 04:57:46,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:46,011 INFO L482 AbstractCegarLoop]: Abstraction has 189 states and 560 transitions. [2021-06-05 04:57:46,011 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,011 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 560 transitions. [2021-06-05 04:57:46,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:46,012 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:46,012 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:46,012 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-06-05 04:57:46,012 INFO L430 AbstractCegarLoop]: === Iteration 65 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:46,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:46,013 INFO L82 PathProgramCache]: Analyzing trace with hash 565954106, now seen corresponding path program 33 times [2021-06-05 04:57:46,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:46,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749305253] [2021-06-05 04:57:46,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:46,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:46,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:46,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749305253] [2021-06-05 04:57:46,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749305253] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:46,053 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:46,053 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:46,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517942558] [2021-06-05 04:57:46,053 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:46,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:46,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:46,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:46,054 INFO L87 Difference]: Start difference. First operand 189 states and 560 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:46,144 INFO L93 Difference]: Finished difference Result 393 states and 1078 transitions. [2021-06-05 04:57:46,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:46,144 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:46,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:46,145 INFO L225 Difference]: With dead ends: 393 [2021-06-05 04:57:46,145 INFO L226 Difference]: Without dead ends: 378 [2021-06-05 04:57:46,145 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 56.8ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:46,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-06-05 04:57:46,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 181. [2021-06-05 04:57:46,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.933333333333333) internal successors, (528), 180 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 528 transitions. [2021-06-05 04:57:46,149 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 528 transitions. Word has length 17 [2021-06-05 04:57:46,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:46,149 INFO L482 AbstractCegarLoop]: Abstraction has 181 states and 528 transitions. [2021-06-05 04:57:46,149 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,149 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 528 transitions. [2021-06-05 04:57:46,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:46,150 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:46,150 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:46,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-06-05 04:57:46,150 INFO L430 AbstractCegarLoop]: === Iteration 66 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:46,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:46,150 INFO L82 PathProgramCache]: Analyzing trace with hash 2049664750, now seen corresponding path program 34 times [2021-06-05 04:57:46,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:46,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458759065] [2021-06-05 04:57:46,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:46,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:46,183 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:46,183 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458759065] [2021-06-05 04:57:46,183 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458759065] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:46,183 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:46,183 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:46,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733397213] [2021-06-05 04:57:46,184 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:46,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:46,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:46,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:46,184 INFO L87 Difference]: Start difference. First operand 181 states and 528 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:46,278 INFO L93 Difference]: Finished difference Result 438 states and 1184 transitions. [2021-06-05 04:57:46,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:46,278 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:46,279 INFO L225 Difference]: With dead ends: 438 [2021-06-05 04:57:46,279 INFO L226 Difference]: Without dead ends: 423 [2021-06-05 04:57:46,279 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 60.8ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:46,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-06-05 04:57:46,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 185. [2021-06-05 04:57:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.9456521739130435) internal successors, (542), 184 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 542 transitions. [2021-06-05 04:57:46,284 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 542 transitions. Word has length 17 [2021-06-05 04:57:46,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:46,284 INFO L482 AbstractCegarLoop]: Abstraction has 185 states and 542 transitions. [2021-06-05 04:57:46,284 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,284 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 542 transitions. [2021-06-05 04:57:46,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:46,285 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:46,285 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:46,285 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-06-05 04:57:46,285 INFO L430 AbstractCegarLoop]: === Iteration 67 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:46,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:46,285 INFO L82 PathProgramCache]: Analyzing trace with hash 278392308, now seen corresponding path program 35 times [2021-06-05 04:57:46,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:46,285 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737840454] [2021-06-05 04:57:46,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:46,322 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:46,322 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737840454] [2021-06-05 04:57:46,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737840454] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:46,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:46,323 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:46,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111613695] [2021-06-05 04:57:46,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:46,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:46,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:46,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:46,323 INFO L87 Difference]: Start difference. First operand 185 states and 542 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:46,413 INFO L93 Difference]: Finished difference Result 433 states and 1175 transitions. [2021-06-05 04:57:46,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:46,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:46,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:46,414 INFO L225 Difference]: With dead ends: 433 [2021-06-05 04:57:46,414 INFO L226 Difference]: Without dead ends: 418 [2021-06-05 04:57:46,414 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 59.9ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:46,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-06-05 04:57:46,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 187. [2021-06-05 04:57:46,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.9623655913978495) internal successors, (551), 186 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 551 transitions. [2021-06-05 04:57:46,418 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 551 transitions. Word has length 17 [2021-06-05 04:57:46,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:46,418 INFO L482 AbstractCegarLoop]: Abstraction has 187 states and 551 transitions. [2021-06-05 04:57:46,418 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 551 transitions. [2021-06-05 04:57:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:46,419 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:46,419 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:46,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-06-05 04:57:46,419 INFO L430 AbstractCegarLoop]: === Iteration 68 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:46,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:46,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1347392328, now seen corresponding path program 36 times [2021-06-05 04:57:46,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:46,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089080895] [2021-06-05 04:57:46,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:46,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:46,458 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:46,458 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089080895] [2021-06-05 04:57:46,458 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089080895] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:46,458 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:46,458 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:46,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686681733] [2021-06-05 04:57:46,459 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:46,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:46,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:46,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:46,459 INFO L87 Difference]: Start difference. First operand 187 states and 551 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:46,564 INFO L93 Difference]: Finished difference Result 416 states and 1145 transitions. [2021-06-05 04:57:46,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:46,565 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:46,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:46,566 INFO L225 Difference]: With dead ends: 416 [2021-06-05 04:57:46,566 INFO L226 Difference]: Without dead ends: 401 [2021-06-05 04:57:46,566 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 64.2ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:46,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2021-06-05 04:57:46,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 181. [2021-06-05 04:57:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.933333333333333) internal successors, (528), 180 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 528 transitions. [2021-06-05 04:57:46,570 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 528 transitions. Word has length 17 [2021-06-05 04:57:46,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:46,570 INFO L482 AbstractCegarLoop]: Abstraction has 181 states and 528 transitions. [2021-06-05 04:57:46,571 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,571 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 528 transitions. [2021-06-05 04:57:46,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:46,571 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:46,571 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:46,571 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-06-05 04:57:46,571 INFO L430 AbstractCegarLoop]: === Iteration 69 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:46,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:46,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1040697164, now seen corresponding path program 37 times [2021-06-05 04:57:46,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:46,572 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123369214] [2021-06-05 04:57:46,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:46,628 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:46,628 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123369214] [2021-06-05 04:57:46,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123369214] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:46,629 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:46,629 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:46,629 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360969298] [2021-06-05 04:57:46,629 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:46,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:46,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:46,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:46,629 INFO L87 Difference]: Start difference. First operand 181 states and 528 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:46,705 INFO L93 Difference]: Finished difference Result 437 states and 1201 transitions. [2021-06-05 04:57:46,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:46,705 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:46,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:46,706 INFO L225 Difference]: With dead ends: 437 [2021-06-05 04:57:46,706 INFO L226 Difference]: Without dead ends: 422 [2021-06-05 04:57:46,706 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 57.1ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-06-05 04:57:46,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 184. [2021-06-05 04:57:46,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.9672131147540983) internal successors, (543), 183 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 543 transitions. [2021-06-05 04:57:46,711 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 543 transitions. Word has length 17 [2021-06-05 04:57:46,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:46,711 INFO L482 AbstractCegarLoop]: Abstraction has 184 states and 543 transitions. [2021-06-05 04:57:46,711 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,711 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 543 transitions. [2021-06-05 04:57:46,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:46,711 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:46,712 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:46,712 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-06-05 04:57:46,712 INFO L430 AbstractCegarLoop]: === Iteration 70 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:46,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:46,712 INFO L82 PathProgramCache]: Analyzing trace with hash 2035634772, now seen corresponding path program 38 times [2021-06-05 04:57:46,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:46,712 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523058689] [2021-06-05 04:57:46,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:46,756 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:46,756 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523058689] [2021-06-05 04:57:46,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523058689] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:46,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:46,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:46,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003097762] [2021-06-05 04:57:46,757 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:46,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:46,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:46,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:46,757 INFO L87 Difference]: Start difference. First operand 184 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:46,844 INFO L93 Difference]: Finished difference Result 435 states and 1194 transitions. [2021-06-05 04:57:46,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:46,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:46,845 INFO L225 Difference]: With dead ends: 435 [2021-06-05 04:57:46,846 INFO L226 Difference]: Without dead ends: 420 [2021-06-05 04:57:46,846 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 50.9ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:46,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-06-05 04:57:46,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 182. [2021-06-05 04:57:46,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9502762430939224) internal successors, (534), 181 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 534 transitions. [2021-06-05 04:57:46,851 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 534 transitions. Word has length 17 [2021-06-05 04:57:46,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:46,851 INFO L482 AbstractCegarLoop]: Abstraction has 182 states and 534 transitions. [2021-06-05 04:57:46,851 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,851 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 534 transitions. [2021-06-05 04:57:46,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:46,851 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:46,851 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:46,852 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-06-05 04:57:46,852 INFO L430 AbstractCegarLoop]: === Iteration 71 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:46,852 INFO L82 PathProgramCache]: Analyzing trace with hash -51636616, now seen corresponding path program 39 times [2021-06-05 04:57:46,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:46,852 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050058757] [2021-06-05 04:57:46,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:46,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:46,898 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:46,898 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050058757] [2021-06-05 04:57:46,898 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050058757] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:46,898 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:46,898 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:46,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585652394] [2021-06-05 04:57:46,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:46,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:46,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:46,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:46,899 INFO L87 Difference]: Start difference. First operand 182 states and 534 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:46,982 INFO L93 Difference]: Finished difference Result 468 states and 1258 transitions. [2021-06-05 04:57:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:46,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:46,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:46,983 INFO L225 Difference]: With dead ends: 468 [2021-06-05 04:57:46,983 INFO L226 Difference]: Without dead ends: 453 [2021-06-05 04:57:46,983 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 52.1ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:46,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-06-05 04:57:46,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 185. [2021-06-05 04:57:46,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.9782608695652173) internal successors, (548), 184 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 548 transitions. [2021-06-05 04:57:46,988 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 548 transitions. Word has length 17 [2021-06-05 04:57:46,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:46,988 INFO L482 AbstractCegarLoop]: Abstraction has 185 states and 548 transitions. [2021-06-05 04:57:46,988 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:46,988 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 548 transitions. [2021-06-05 04:57:46,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:46,989 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:46,989 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:46,989 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-06-05 04:57:46,989 INFO L430 AbstractCegarLoop]: === Iteration 72 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:46,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:46,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1221825612, now seen corresponding path program 40 times [2021-06-05 04:57:46,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:46,990 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140216963] [2021-06-05 04:57:46,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:47,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:47,024 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:47,024 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140216963] [2021-06-05 04:57:47,024 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140216963] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:47,024 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:47,024 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:47,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032075634] [2021-06-05 04:57:47,024 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:47,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:47,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:47,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:47,025 INFO L87 Difference]: Start difference. First operand 185 states and 548 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:47,102 INFO L93 Difference]: Finished difference Result 452 states and 1235 transitions. [2021-06-05 04:57:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:47,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:47,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:47,103 INFO L225 Difference]: With dead ends: 452 [2021-06-05 04:57:47,103 INFO L226 Difference]: Without dead ends: 437 [2021-06-05 04:57:47,104 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:47,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-06-05 04:57:47,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 182. [2021-06-05 04:57:47,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9502762430939224) internal successors, (534), 181 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 534 transitions. [2021-06-05 04:57:47,107 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 534 transitions. Word has length 17 [2021-06-05 04:57:47,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:47,107 INFO L482 AbstractCegarLoop]: Abstraction has 182 states and 534 transitions. [2021-06-05 04:57:47,107 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,108 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 534 transitions. [2021-06-05 04:57:47,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:47,108 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:47,108 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:47,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-06-05 04:57:47,108 INFO L430 AbstractCegarLoop]: === Iteration 73 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:47,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:47,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1238762664, now seen corresponding path program 41 times [2021-06-05 04:57:47,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:47,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011497347] [2021-06-05 04:57:47,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:47,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:47,160 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:47,160 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011497347] [2021-06-05 04:57:47,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011497347] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:47,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:47,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:47,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440065348] [2021-06-05 04:57:47,161 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:47,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:47,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:47,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:47,161 INFO L87 Difference]: Start difference. First operand 182 states and 534 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:47,256 INFO L93 Difference]: Finished difference Result 446 states and 1215 transitions. [2021-06-05 04:57:47,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:47,256 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:47,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:47,257 INFO L225 Difference]: With dead ends: 446 [2021-06-05 04:57:47,257 INFO L226 Difference]: Without dead ends: 431 [2021-06-05 04:57:47,257 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 54.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:47,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-06-05 04:57:47,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 184. [2021-06-05 04:57:47,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.9672131147540983) internal successors, (543), 183 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 543 transitions. [2021-06-05 04:57:47,262 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 543 transitions. Word has length 17 [2021-06-05 04:57:47,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:47,262 INFO L482 AbstractCegarLoop]: Abstraction has 184 states and 543 transitions. [2021-06-05 04:57:47,262 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,263 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 543 transitions. [2021-06-05 04:57:47,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:47,263 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:47,263 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:47,263 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-06-05 04:57:47,263 INFO L430 AbstractCegarLoop]: === Iteration 74 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:47,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:47,264 INFO L82 PathProgramCache]: Analyzing trace with hash -98478828, now seen corresponding path program 42 times [2021-06-05 04:57:47,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:47,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247855474] [2021-06-05 04:57:47,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:47,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:47,301 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:47,301 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247855474] [2021-06-05 04:57:47,302 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247855474] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:47,302 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:47,302 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:47,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991092964] [2021-06-05 04:57:47,302 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:47,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:47,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:47,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:47,302 INFO L87 Difference]: Start difference. First operand 184 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:47,387 INFO L93 Difference]: Finished difference Result 425 states and 1177 transitions. [2021-06-05 04:57:47,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:47,387 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:47,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:47,388 INFO L225 Difference]: With dead ends: 425 [2021-06-05 04:57:47,388 INFO L226 Difference]: Without dead ends: 410 [2021-06-05 04:57:47,388 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:47,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-06-05 04:57:47,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 179. [2021-06-05 04:57:47,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.9101123595505616) internal successors, (518), 178 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 518 transitions. [2021-06-05 04:57:47,392 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 518 transitions. Word has length 17 [2021-06-05 04:57:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:47,392 INFO L482 AbstractCegarLoop]: Abstraction has 179 states and 518 transitions. [2021-06-05 04:57:47,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 518 transitions. [2021-06-05 04:57:47,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:47,392 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:47,392 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:47,392 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-06-05 04:57:47,393 INFO L430 AbstractCegarLoop]: === Iteration 75 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:47,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:47,393 INFO L82 PathProgramCache]: Analyzing trace with hash -485249606, now seen corresponding path program 43 times [2021-06-05 04:57:47,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:47,393 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764528988] [2021-06-05 04:57:47,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:47,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:47,426 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:47,426 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764528988] [2021-06-05 04:57:47,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764528988] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:47,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:47,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:47,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618655516] [2021-06-05 04:57:47,427 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:47,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:47,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:47,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:47,427 INFO L87 Difference]: Start difference. First operand 179 states and 518 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:47,521 INFO L93 Difference]: Finished difference Result 323 states and 889 transitions. [2021-06-05 04:57:47,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:47,521 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:47,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:47,522 INFO L225 Difference]: With dead ends: 323 [2021-06-05 04:57:47,522 INFO L226 Difference]: Without dead ends: 308 [2021-06-05 04:57:47,522 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 66.4ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:47,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-06-05 04:57:47,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 187. [2021-06-05 04:57:47,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.913978494623656) internal successors, (542), 186 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 542 transitions. [2021-06-05 04:57:47,527 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 542 transitions. Word has length 17 [2021-06-05 04:57:47,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:47,527 INFO L482 AbstractCegarLoop]: Abstraction has 187 states and 542 transitions. [2021-06-05 04:57:47,527 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,527 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 542 transitions. [2021-06-05 04:57:47,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:47,528 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:47,528 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:47,528 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-06-05 04:57:47,528 INFO L430 AbstractCegarLoop]: === Iteration 76 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:47,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:47,528 INFO L82 PathProgramCache]: Analyzing trace with hash 2038445248, now seen corresponding path program 44 times [2021-06-05 04:57:47,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:47,528 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125418319] [2021-06-05 04:57:47,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:47,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:47,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:47,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125418319] [2021-06-05 04:57:47,565 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125418319] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:47,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:47,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:47,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807385572] [2021-06-05 04:57:47,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:47,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:47,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:47,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:47,566 INFO L87 Difference]: Start difference. First operand 187 states and 542 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:47,675 INFO L93 Difference]: Finished difference Result 353 states and 951 transitions. [2021-06-05 04:57:47,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:47,675 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:47,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:47,676 INFO L225 Difference]: With dead ends: 353 [2021-06-05 04:57:47,676 INFO L226 Difference]: Without dead ends: 338 [2021-06-05 04:57:47,676 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 71.8ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:47,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-06-05 04:57:47,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 189. [2021-06-05 04:57:47,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9308510638297873) internal successors, (551), 188 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 551 transitions. [2021-06-05 04:57:47,680 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 551 transitions. Word has length 17 [2021-06-05 04:57:47,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:47,680 INFO L482 AbstractCegarLoop]: Abstraction has 189 states and 551 transitions. [2021-06-05 04:57:47,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,680 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 551 transitions. [2021-06-05 04:57:47,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:47,681 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:47,681 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:47,681 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-06-05 04:57:47,681 INFO L430 AbstractCegarLoop]: === Iteration 77 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:47,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:47,681 INFO L82 PathProgramCache]: Analyzing trace with hash 412660612, now seen corresponding path program 45 times [2021-06-05 04:57:47,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:47,682 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146115404] [2021-06-05 04:57:47,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:47,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:47,735 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:47,735 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146115404] [2021-06-05 04:57:47,735 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146115404] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:47,735 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:47,735 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:47,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350104897] [2021-06-05 04:57:47,735 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:47,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:47,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:47,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:47,736 INFO L87 Difference]: Start difference. First operand 189 states and 551 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:47,828 INFO L93 Difference]: Finished difference Result 336 states and 921 transitions. [2021-06-05 04:57:47,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:47,828 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:47,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:47,829 INFO L225 Difference]: With dead ends: 336 [2021-06-05 04:57:47,829 INFO L226 Difference]: Without dead ends: 321 [2021-06-05 04:57:47,829 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 67.1ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:47,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-06-05 04:57:47,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 183. [2021-06-05 04:57:47,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.901098901098901) internal successors, (528), 182 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 528 transitions. [2021-06-05 04:57:47,832 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 528 transitions. Word has length 17 [2021-06-05 04:57:47,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:47,832 INFO L482 AbstractCegarLoop]: Abstraction has 183 states and 528 transitions. [2021-06-05 04:57:47,832 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,833 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 528 transitions. [2021-06-05 04:57:47,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:47,833 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:47,833 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:47,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-06-05 04:57:47,833 INFO L430 AbstractCegarLoop]: === Iteration 78 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:47,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:47,833 INFO L82 PathProgramCache]: Analyzing trace with hash 379489126, now seen corresponding path program 46 times [2021-06-05 04:57:47,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:47,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685122708] [2021-06-05 04:57:47,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:47,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:47,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:47,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685122708] [2021-06-05 04:57:47,870 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685122708] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:47,870 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:47,870 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:47,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879991417] [2021-06-05 04:57:47,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:47,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:47,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:47,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:47,871 INFO L87 Difference]: Start difference. First operand 183 states and 528 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:47,942 INFO L93 Difference]: Finished difference Result 324 states and 889 transitions. [2021-06-05 04:57:47,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:47,942 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:47,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:47,942 INFO L225 Difference]: With dead ends: 324 [2021-06-05 04:57:47,942 INFO L226 Difference]: Without dead ends: 309 [2021-06-05 04:57:47,943 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 55.8ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:47,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-06-05 04:57:47,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 189. [2021-06-05 04:57:47,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.8882978723404253) internal successors, (543), 188 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 543 transitions. [2021-06-05 04:57:47,954 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 543 transitions. Word has length 17 [2021-06-05 04:57:47,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:47,954 INFO L482 AbstractCegarLoop]: Abstraction has 189 states and 543 transitions. [2021-06-05 04:57:47,954 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:47,954 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 543 transitions. [2021-06-05 04:57:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:47,955 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:47,955 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:47,955 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-06-05 04:57:47,955 INFO L430 AbstractCegarLoop]: === Iteration 79 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:47,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:47,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1252190110, now seen corresponding path program 47 times [2021-06-05 04:57:47,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:47,955 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698505160] [2021-06-05 04:57:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:47,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:47,996 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:47,996 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698505160] [2021-06-05 04:57:47,996 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698505160] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:47,996 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:47,996 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:47,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686924255] [2021-06-05 04:57:47,996 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:47,996 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:47,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:47,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:47,997 INFO L87 Difference]: Start difference. First operand 189 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:48,080 INFO L93 Difference]: Finished difference Result 354 states and 954 transitions. [2021-06-05 04:57:48,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:48,080 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:48,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:48,081 INFO L225 Difference]: With dead ends: 354 [2021-06-05 04:57:48,081 INFO L226 Difference]: Without dead ends: 339 [2021-06-05 04:57:48,081 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 58.4ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:48,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2021-06-05 04:57:48,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 191. [2021-06-05 04:57:48,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.905263157894737) internal successors, (552), 190 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 552 transitions. [2021-06-05 04:57:48,084 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 552 transitions. Word has length 17 [2021-06-05 04:57:48,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:48,084 INFO L482 AbstractCegarLoop]: Abstraction has 191 states and 552 transitions. [2021-06-05 04:57:48,084 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,084 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 552 transitions. [2021-06-05 04:57:48,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:48,085 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:48,085 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:48,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-06-05 04:57:48,085 INFO L430 AbstractCegarLoop]: === Iteration 80 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:48,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:48,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1416992550, now seen corresponding path program 48 times [2021-06-05 04:57:48,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:48,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874171718] [2021-06-05 04:57:48,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:48,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:48,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:48,129 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:48,129 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874171718] [2021-06-05 04:57:48,129 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874171718] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:48,129 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:48,129 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:48,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480973750] [2021-06-05 04:57:48,129 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:48,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:48,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:48,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:48,130 INFO L87 Difference]: Start difference. First operand 191 states and 552 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:48,219 INFO L93 Difference]: Finished difference Result 333 states and 916 transitions. [2021-06-05 04:57:48,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:48,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:48,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:48,220 INFO L225 Difference]: With dead ends: 333 [2021-06-05 04:57:48,220 INFO L226 Difference]: Without dead ends: 318 [2021-06-05 04:57:48,220 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 62.4ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:48,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-06-05 04:57:48,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 189. [2021-06-05 04:57:48,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.8882978723404253) internal successors, (543), 188 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 543 transitions. [2021-06-05 04:57:48,224 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 543 transitions. Word has length 17 [2021-06-05 04:57:48,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:48,224 INFO L482 AbstractCegarLoop]: Abstraction has 189 states and 543 transitions. [2021-06-05 04:57:48,224 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,224 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 543 transitions. [2021-06-05 04:57:48,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:48,225 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:48,225 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:48,225 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-06-05 04:57:48,225 INFO L430 AbstractCegarLoop]: === Iteration 81 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:48,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:48,225 INFO L82 PathProgramCache]: Analyzing trace with hash -167418646, now seen corresponding path program 49 times [2021-06-05 04:57:48,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:48,226 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622225407] [2021-06-05 04:57:48,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:48,264 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:48,264 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622225407] [2021-06-05 04:57:48,264 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622225407] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:48,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:48,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:48,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563366855] [2021-06-05 04:57:48,264 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:48,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:48,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:48,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:48,265 INFO L87 Difference]: Start difference. First operand 189 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:48,368 INFO L93 Difference]: Finished difference Result 386 states and 1068 transitions. [2021-06-05 04:57:48,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:48,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:48,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:48,369 INFO L225 Difference]: With dead ends: 386 [2021-06-05 04:57:48,369 INFO L226 Difference]: Without dead ends: 371 [2021-06-05 04:57:48,369 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 65.6ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:48,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-06-05 04:57:48,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 194. [2021-06-05 04:57:48,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.922279792746114) internal successors, (564), 193 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 564 transitions. [2021-06-05 04:57:48,374 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 564 transitions. Word has length 17 [2021-06-05 04:57:48,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:48,374 INFO L482 AbstractCegarLoop]: Abstraction has 194 states and 564 transitions. [2021-06-05 04:57:48,374 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,374 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 564 transitions. [2021-06-05 04:57:48,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:48,375 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:48,375 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:48,375 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-06-05 04:57:48,375 INFO L430 AbstractCegarLoop]: === Iteration 82 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:48,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:48,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1386054006, now seen corresponding path program 50 times [2021-06-05 04:57:48,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:48,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449411434] [2021-06-05 04:57:48,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:48,412 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:48,412 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449411434] [2021-06-05 04:57:48,412 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449411434] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:48,412 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:48,412 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:48,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793714739] [2021-06-05 04:57:48,412 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:48,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:48,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:48,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:48,413 INFO L87 Difference]: Start difference. First operand 194 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:48,492 INFO L93 Difference]: Finished difference Result 390 states and 1074 transitions. [2021-06-05 04:57:48,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:48,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:48,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:48,493 INFO L225 Difference]: With dead ends: 390 [2021-06-05 04:57:48,493 INFO L226 Difference]: Without dead ends: 375 [2021-06-05 04:57:48,493 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 55.6ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:48,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2021-06-05 04:57:48,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 192. [2021-06-05 04:57:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2021-06-05 04:57:48,497 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2021-06-05 04:57:48,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:48,497 INFO L482 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2021-06-05 04:57:48,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,497 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2021-06-05 04:57:48,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:48,497 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:48,497 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:48,498 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-06-05 04:57:48,498 INFO L430 AbstractCegarLoop]: === Iteration 83 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:48,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:48,498 INFO L82 PathProgramCache]: Analyzing trace with hash -310342850, now seen corresponding path program 51 times [2021-06-05 04:57:48,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:48,498 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520012352] [2021-06-05 04:57:48,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:48,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:48,533 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:48,533 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520012352] [2021-06-05 04:57:48,533 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520012352] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:48,533 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:48,533 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:48,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598760631] [2021-06-05 04:57:48,533 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:48,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:48,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:48,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:48,534 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:48,603 INFO L93 Difference]: Finished difference Result 386 states and 1060 transitions. [2021-06-05 04:57:48,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:48,603 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:48,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:48,604 INFO L225 Difference]: With dead ends: 386 [2021-06-05 04:57:48,604 INFO L226 Difference]: Without dead ends: 371 [2021-06-05 04:57:48,604 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 50.4ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:48,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-06-05 04:57:48,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 192. [2021-06-05 04:57:48,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2021-06-05 04:57:48,609 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2021-06-05 04:57:48,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:48,609 INFO L482 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2021-06-05 04:57:48,609 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,610 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2021-06-05 04:57:48,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:48,610 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:48,610 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:48,610 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-06-05 04:57:48,610 INFO L430 AbstractCegarLoop]: === Iteration 84 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:48,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:48,611 INFO L82 PathProgramCache]: Analyzing trace with hash -548101402, now seen corresponding path program 52 times [2021-06-05 04:57:48,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:48,611 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628765903] [2021-06-05 04:57:48,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:48,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:48,648 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:48,648 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628765903] [2021-06-05 04:57:48,648 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628765903] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:48,648 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:48,648 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:48,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104119554] [2021-06-05 04:57:48,648 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:48,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:48,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:48,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:48,649 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:48,742 INFO L93 Difference]: Finished difference Result 464 states and 1256 transitions. [2021-06-05 04:57:48,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:48,743 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:48,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:48,744 INFO L225 Difference]: With dead ends: 464 [2021-06-05 04:57:48,744 INFO L226 Difference]: Without dead ends: 449 [2021-06-05 04:57:48,744 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 54.2ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:48,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2021-06-05 04:57:48,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 195. [2021-06-05 04:57:48,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9381443298969074) internal successors, (570), 194 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 570 transitions. [2021-06-05 04:57:48,749 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 570 transitions. Word has length 17 [2021-06-05 04:57:48,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:48,749 INFO L482 AbstractCegarLoop]: Abstraction has 195 states and 570 transitions. [2021-06-05 04:57:48,749 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,749 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 570 transitions. [2021-06-05 04:57:48,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:48,750 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:48,750 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:48,750 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-06-05 04:57:48,750 INFO L430 AbstractCegarLoop]: === Iteration 85 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:48,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:48,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1766736762, now seen corresponding path program 53 times [2021-06-05 04:57:48,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:48,750 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507252384] [2021-06-05 04:57:48,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:48,788 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:48,788 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507252384] [2021-06-05 04:57:48,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507252384] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:48,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:48,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:48,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637958626] [2021-06-05 04:57:48,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:48,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:48,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:48,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:48,790 INFO L87 Difference]: Start difference. First operand 195 states and 570 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:48,869 INFO L93 Difference]: Finished difference Result 468 states and 1262 transitions. [2021-06-05 04:57:48,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:48,869 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:48,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:48,870 INFO L225 Difference]: With dead ends: 468 [2021-06-05 04:57:48,870 INFO L226 Difference]: Without dead ends: 453 [2021-06-05 04:57:48,870 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 48.5ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:48,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-06-05 04:57:48,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 193. [2021-06-05 04:57:48,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.921875) internal successors, (561), 192 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 561 transitions. [2021-06-05 04:57:48,875 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 561 transitions. Word has length 17 [2021-06-05 04:57:48,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:48,875 INFO L482 AbstractCegarLoop]: Abstraction has 193 states and 561 transitions. [2021-06-05 04:57:48,875 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,875 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 561 transitions. [2021-06-05 04:57:48,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:48,876 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:48,876 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:48,876 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-06-05 04:57:48,876 INFO L430 AbstractCegarLoop]: === Iteration 86 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:48,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:48,876 INFO L82 PathProgramCache]: Analyzing trace with hash 440959146, now seen corresponding path program 54 times [2021-06-05 04:57:48,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:48,877 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094146803] [2021-06-05 04:57:48,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:48,911 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:48,911 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094146803] [2021-06-05 04:57:48,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094146803] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:48,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:48,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:48,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456107826] [2021-06-05 04:57:48,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:48,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:48,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:48,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:48,913 INFO L87 Difference]: Start difference. First operand 193 states and 561 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:48,987 INFO L93 Difference]: Finished difference Result 431 states and 1182 transitions. [2021-06-05 04:57:48,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:48,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:48,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:48,988 INFO L225 Difference]: With dead ends: 431 [2021-06-05 04:57:48,988 INFO L226 Difference]: Without dead ends: 416 [2021-06-05 04:57:48,989 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 51.0ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:48,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2021-06-05 04:57:48,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 196. [2021-06-05 04:57:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.948717948717949) internal successors, (575), 195 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 575 transitions. [2021-06-05 04:57:48,993 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 575 transitions. Word has length 17 [2021-06-05 04:57:48,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:48,993 INFO L482 AbstractCegarLoop]: Abstraction has 196 states and 575 transitions. [2021-06-05 04:57:48,993 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:48,993 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 575 transitions. [2021-06-05 04:57:48,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:48,994 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:48,994 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:48,994 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-06-05 04:57:48,994 INFO L430 AbstractCegarLoop]: === Iteration 87 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:48,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:48,995 INFO L82 PathProgramCache]: Analyzing trace with hash -729229850, now seen corresponding path program 55 times [2021-06-05 04:57:48,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:48,995 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878898930] [2021-06-05 04:57:48,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:49,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:49,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878898930] [2021-06-05 04:57:49,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878898930] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:49,028 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:49,028 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:49,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086922108] [2021-06-05 04:57:49,028 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:49,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:49,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:49,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:49,029 INFO L87 Difference]: Start difference. First operand 196 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:49,128 INFO L93 Difference]: Finished difference Result 415 states and 1159 transitions. [2021-06-05 04:57:49,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:49,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:49,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:49,129 INFO L225 Difference]: With dead ends: 415 [2021-06-05 04:57:49,129 INFO L226 Difference]: Without dead ends: 400 [2021-06-05 04:57:49,129 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 47.5ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:49,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-06-05 04:57:49,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 193. [2021-06-05 04:57:49,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.921875) internal successors, (561), 192 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 561 transitions. [2021-06-05 04:57:49,133 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 561 transitions. Word has length 17 [2021-06-05 04:57:49,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:49,133 INFO L482 AbstractCegarLoop]: Abstraction has 193 states and 561 transitions. [2021-06-05 04:57:49,133 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,133 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 561 transitions. [2021-06-05 04:57:49,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:49,134 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:49,134 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:49,134 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-06-05 04:57:49,134 INFO L430 AbstractCegarLoop]: === Iteration 88 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:49,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:49,134 INFO L82 PathProgramCache]: Analyzing trace with hash -746166902, now seen corresponding path program 56 times [2021-06-05 04:57:49,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:49,134 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504212773] [2021-06-05 04:57:49,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:49,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:49,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:49,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504212773] [2021-06-05 04:57:49,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504212773] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:49,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:49,171 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:49,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177310908] [2021-06-05 04:57:49,171 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:49,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:49,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:49,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:49,171 INFO L87 Difference]: Start difference. First operand 193 states and 561 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:49,263 INFO L93 Difference]: Finished difference Result 449 states and 1229 transitions. [2021-06-05 04:57:49,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:49,263 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:49,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:49,264 INFO L225 Difference]: With dead ends: 449 [2021-06-05 04:57:49,264 INFO L226 Difference]: Without dead ends: 434 [2021-06-05 04:57:49,264 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 57.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:49,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-06-05 04:57:49,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 195. [2021-06-05 04:57:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9381443298969074) internal successors, (570), 194 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 570 transitions. [2021-06-05 04:57:49,270 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 570 transitions. Word has length 17 [2021-06-05 04:57:49,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:49,270 INFO L482 AbstractCegarLoop]: Abstraction has 195 states and 570 transitions. [2021-06-05 04:57:49,270 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,270 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 570 transitions. [2021-06-05 04:57:49,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:49,271 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:49,271 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:49,271 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-06-05 04:57:49,271 INFO L430 AbstractCegarLoop]: === Iteration 89 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:49,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:49,271 INFO L82 PathProgramCache]: Analyzing trace with hash 394116934, now seen corresponding path program 57 times [2021-06-05 04:57:49,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:49,271 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690936974] [2021-06-05 04:57:49,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:49,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:49,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:49,311 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:49,311 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690936974] [2021-06-05 04:57:49,311 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690936974] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:49,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:49,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:49,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882233501] [2021-06-05 04:57:49,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:49,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:49,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:49,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:49,312 INFO L87 Difference]: Start difference. First operand 195 states and 570 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:49,418 INFO L93 Difference]: Finished difference Result 428 states and 1191 transitions. [2021-06-05 04:57:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:49,418 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:49,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:49,419 INFO L225 Difference]: With dead ends: 428 [2021-06-05 04:57:49,419 INFO L226 Difference]: Without dead ends: 413 [2021-06-05 04:57:49,419 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 57.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:49,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-06-05 04:57:49,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 192. [2021-06-05 04:57:49,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2021-06-05 04:57:49,424 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2021-06-05 04:57:49,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:49,424 INFO L482 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2021-06-05 04:57:49,424 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,424 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2021-06-05 04:57:49,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:49,425 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:49,425 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:49,425 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-06-05 04:57:49,425 INFO L430 AbstractCegarLoop]: === Iteration 90 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:49,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:49,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1262551738, now seen corresponding path program 58 times [2021-06-05 04:57:49,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:49,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4827008] [2021-06-05 04:57:49,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:49,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:49,460 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:49,460 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4827008] [2021-06-05 04:57:49,460 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4827008] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:49,460 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:49,460 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:49,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516102978] [2021-06-05 04:57:49,461 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:49,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:49,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:49,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:49,461 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:49,554 INFO L93 Difference]: Finished difference Result 429 states and 1161 transitions. [2021-06-05 04:57:49,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:49,554 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:49,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:49,555 INFO L225 Difference]: With dead ends: 429 [2021-06-05 04:57:49,555 INFO L226 Difference]: Without dead ends: 414 [2021-06-05 04:57:49,556 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 61.1ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:49,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-06-05 04:57:49,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 194. [2021-06-05 04:57:49,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.911917098445596) internal successors, (562), 193 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 562 transitions. [2021-06-05 04:57:49,560 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 562 transitions. Word has length 17 [2021-06-05 04:57:49,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:49,561 INFO L482 AbstractCegarLoop]: Abstraction has 194 states and 562 transitions. [2021-06-05 04:57:49,561 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,561 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 562 transitions. [2021-06-05 04:57:49,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:49,561 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:49,561 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:49,561 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-06-05 04:57:49,561 INFO L430 AbstractCegarLoop]: === Iteration 91 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:49,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:49,562 INFO L82 PathProgramCache]: Analyzing trace with hash -2074864322, now seen corresponding path program 59 times [2021-06-05 04:57:49,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:49,562 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658135994] [2021-06-05 04:57:49,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:49,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:49,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:49,600 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:49,600 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658135994] [2021-06-05 04:57:49,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658135994] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:49,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:49,600 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:49,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169305314] [2021-06-05 04:57:49,600 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:49,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:49,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:49,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:49,601 INFO L87 Difference]: Start difference. First operand 194 states and 562 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:49,699 INFO L93 Difference]: Finished difference Result 430 states and 1172 transitions. [2021-06-05 04:57:49,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:49,699 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:49,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:49,700 INFO L225 Difference]: With dead ends: 430 [2021-06-05 04:57:49,700 INFO L226 Difference]: Without dead ends: 415 [2021-06-05 04:57:49,700 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 62.7ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2021-06-05 04:57:49,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 196. [2021-06-05 04:57:49,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.928205128205128) internal successors, (571), 195 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 571 transitions. [2021-06-05 04:57:49,705 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 571 transitions. Word has length 17 [2021-06-05 04:57:49,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:49,705 INFO L482 AbstractCegarLoop]: Abstraction has 196 states and 571 transitions. [2021-06-05 04:57:49,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,706 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 571 transitions. [2021-06-05 04:57:49,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:49,706 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:49,706 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:49,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-06-05 04:57:49,706 INFO L430 AbstractCegarLoop]: === Iteration 92 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:49,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:49,707 INFO L82 PathProgramCache]: Analyzing trace with hash -934580486, now seen corresponding path program 60 times [2021-06-05 04:57:49,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:49,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834892576] [2021-06-05 04:57:49,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:49,748 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:49,748 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834892576] [2021-06-05 04:57:49,748 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834892576] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:49,748 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:49,748 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:49,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797003485] [2021-06-05 04:57:49,749 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:49,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:49,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:49,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:49,749 INFO L87 Difference]: Start difference. First operand 196 states and 571 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:49,850 INFO L93 Difference]: Finished difference Result 409 states and 1134 transitions. [2021-06-05 04:57:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:49,850 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:49,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:49,851 INFO L225 Difference]: With dead ends: 409 [2021-06-05 04:57:49,851 INFO L226 Difference]: Without dead ends: 394 [2021-06-05 04:57:49,851 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 63.4ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:49,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2021-06-05 04:57:49,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 192. [2021-06-05 04:57:49,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2021-06-05 04:57:49,856 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2021-06-05 04:57:49,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:49,856 INFO L482 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2021-06-05 04:57:49,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,856 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2021-06-05 04:57:49,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:49,857 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:49,857 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:49,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-06-05 04:57:49,857 INFO L430 AbstractCegarLoop]: === Iteration 93 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:49,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:49,857 INFO L82 PathProgramCache]: Analyzing trace with hash -674451760, now seen corresponding path program 61 times [2021-06-05 04:57:49,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:49,857 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892797433] [2021-06-05 04:57:49,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:49,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:49,900 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:49,900 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892797433] [2021-06-05 04:57:49,900 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892797433] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:49,900 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:49,900 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:49,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855631585] [2021-06-05 04:57:49,900 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:49,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:49,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:49,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:49,901 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:49,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:49,997 INFO L93 Difference]: Finished difference Result 328 states and 903 transitions. [2021-06-05 04:57:49,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:49,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:49,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:49,998 INFO L225 Difference]: With dead ends: 328 [2021-06-05 04:57:49,998 INFO L226 Difference]: Without dead ends: 313 [2021-06-05 04:57:49,998 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 74.4ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:49,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-06-05 04:57:50,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 197. [2021-06-05 04:57:50,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.913265306122449) internal successors, (571), 196 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 571 transitions. [2021-06-05 04:57:50,002 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 571 transitions. Word has length 17 [2021-06-05 04:57:50,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:50,002 INFO L482 AbstractCegarLoop]: Abstraction has 197 states and 571 transitions. [2021-06-05 04:57:50,002 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,002 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 571 transitions. [2021-06-05 04:57:50,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:50,003 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:50,003 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:50,003 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-06-05 04:57:50,003 INFO L430 AbstractCegarLoop]: === Iteration 94 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:50,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:50,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1924375180, now seen corresponding path program 62 times [2021-06-05 04:57:50,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:50,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896510239] [2021-06-05 04:57:50,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:50,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:50,049 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:50,049 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896510239] [2021-06-05 04:57:50,049 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896510239] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:50,050 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:50,050 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:50,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519531487] [2021-06-05 04:57:50,050 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:50,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:50,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:50,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:50,050 INFO L87 Difference]: Start difference. First operand 197 states and 571 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:50,158 INFO L93 Difference]: Finished difference Result 357 states and 963 transitions. [2021-06-05 04:57:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:50,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:50,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:50,159 INFO L225 Difference]: With dead ends: 357 [2021-06-05 04:57:50,159 INFO L226 Difference]: Without dead ends: 342 [2021-06-05 04:57:50,159 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 75.3ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-06-05 04:57:50,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 199. [2021-06-05 04:57:50,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9292929292929295) internal successors, (580), 198 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2021-06-05 04:57:50,170 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2021-06-05 04:57:50,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:50,170 INFO L482 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2021-06-05 04:57:50,170 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,170 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2021-06-05 04:57:50,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:50,171 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:50,171 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:50,171 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-06-05 04:57:50,171 INFO L430 AbstractCegarLoop]: === Iteration 95 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:50,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:50,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1151956756, now seen corresponding path program 63 times [2021-06-05 04:57:50,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:50,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456786503] [2021-06-05 04:57:50,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:50,216 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:50,216 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456786503] [2021-06-05 04:57:50,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456786503] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:50,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:50,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:50,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564051077] [2021-06-05 04:57:50,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:50,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:50,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:50,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:50,217 INFO L87 Difference]: Start difference. First operand 199 states and 580 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:50,325 INFO L93 Difference]: Finished difference Result 334 states and 918 transitions. [2021-06-05 04:57:50,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:50,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:50,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:50,326 INFO L225 Difference]: With dead ends: 334 [2021-06-05 04:57:50,326 INFO L226 Difference]: Without dead ends: 319 [2021-06-05 04:57:50,326 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 75.4ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:50,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-06-05 04:57:50,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 195. [2021-06-05 04:57:50,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2021-06-05 04:57:50,339 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2021-06-05 04:57:50,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:50,339 INFO L482 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2021-06-05 04:57:50,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,339 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2021-06-05 04:57:50,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:50,340 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:50,340 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:50,340 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-06-05 04:57:50,340 INFO L430 AbstractCegarLoop]: === Iteration 96 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:50,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:50,340 INFO L82 PathProgramCache]: Analyzing trace with hash 263807996, now seen corresponding path program 64 times [2021-06-05 04:57:50,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:50,341 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456518584] [2021-06-05 04:57:50,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:50,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:50,391 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:50,391 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456518584] [2021-06-05 04:57:50,391 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456518584] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:50,391 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:50,391 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:50,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749734577] [2021-06-05 04:57:50,392 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:50,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:50,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:50,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:50,393 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:50,501 INFO L93 Difference]: Finished difference Result 349 states and 945 transitions. [2021-06-05 04:57:50,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:50,502 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:50,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:50,502 INFO L225 Difference]: With dead ends: 349 [2021-06-05 04:57:50,502 INFO L226 Difference]: Without dead ends: 334 [2021-06-05 04:57:50,502 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 75.2ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:50,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-06-05 04:57:50,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 199. [2021-06-05 04:57:50,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9292929292929295) internal successors, (580), 198 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2021-06-05 04:57:50,508 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2021-06-05 04:57:50,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:50,508 INFO L482 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2021-06-05 04:57:50,508 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,509 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2021-06-05 04:57:50,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:50,509 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:50,509 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:50,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-06-05 04:57:50,509 INFO L430 AbstractCegarLoop]: === Iteration 97 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:50,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:50,510 INFO L82 PathProgramCache]: Analyzing trace with hash -954827364, now seen corresponding path program 65 times [2021-06-05 04:57:50,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:50,510 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517033824] [2021-06-05 04:57:50,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:50,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:50,555 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:50,555 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517033824] [2021-06-05 04:57:50,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517033824] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:50,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:50,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:50,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538621428] [2021-06-05 04:57:50,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:50,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:50,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:50,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:50,557 INFO L87 Difference]: Start difference. First operand 199 states and 580 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:50,654 INFO L93 Difference]: Finished difference Result 353 states and 951 transitions. [2021-06-05 04:57:50,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:50,654 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:50,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:50,654 INFO L225 Difference]: With dead ends: 353 [2021-06-05 04:57:50,654 INFO L226 Difference]: Without dead ends: 338 [2021-06-05 04:57:50,655 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 68.6ms TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:50,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-06-05 04:57:50,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 197. [2021-06-05 04:57:50,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.913265306122449) internal successors, (571), 196 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 571 transitions. [2021-06-05 04:57:50,659 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 571 transitions. Word has length 17 [2021-06-05 04:57:50,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:50,659 INFO L482 AbstractCegarLoop]: Abstraction has 197 states and 571 transitions. [2021-06-05 04:57:50,659 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,659 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 571 transitions. [2021-06-05 04:57:50,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:50,659 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:50,660 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:50,660 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-06-05 04:57:50,660 INFO L430 AbstractCegarLoop]: === Iteration 98 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:50,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:50,660 INFO L82 PathProgramCache]: Analyzing trace with hash 120883792, now seen corresponding path program 66 times [2021-06-05 04:57:50,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:50,660 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696391920] [2021-06-05 04:57:50,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:50,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:50,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:50,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696391920] [2021-06-05 04:57:50,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696391920] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:50,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:50,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:50,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814012142] [2021-06-05 04:57:50,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:50,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:50,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:50,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:50,694 INFO L87 Difference]: Start difference. First operand 197 states and 571 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:50,766 INFO L93 Difference]: Finished difference Result 324 states and 891 transitions. [2021-06-05 04:57:50,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:50,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:50,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:50,767 INFO L225 Difference]: With dead ends: 324 [2021-06-05 04:57:50,767 INFO L226 Difference]: Without dead ends: 309 [2021-06-05 04:57:50,767 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 56.6ms TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:50,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-06-05 04:57:50,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 195. [2021-06-05 04:57:50,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2021-06-05 04:57:50,771 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2021-06-05 04:57:50,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:50,771 INFO L482 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2021-06-05 04:57:50,771 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,771 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2021-06-05 04:57:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:50,771 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:50,771 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:50,771 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-06-05 04:57:50,771 INFO L430 AbstractCegarLoop]: === Iteration 99 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:50,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:50,772 INFO L82 PathProgramCache]: Analyzing trace with hash 409284692, now seen corresponding path program 67 times [2021-06-05 04:57:50,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:50,772 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484953236] [2021-06-05 04:57:50,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:50,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:50,813 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:50,813 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484953236] [2021-06-05 04:57:50,813 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484953236] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:50,813 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:50,813 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:50,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446918438] [2021-06-05 04:57:50,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:50,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:50,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:50,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:50,814 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:50,926 INFO L93 Difference]: Finished difference Result 442 states and 1201 transitions. [2021-06-05 04:57:50,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:50,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:50,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:50,927 INFO L225 Difference]: With dead ends: 442 [2021-06-05 04:57:50,927 INFO L226 Difference]: Without dead ends: 427 [2021-06-05 04:57:50,928 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 61.5ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:50,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-06-05 04:57:50,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 198. [2021-06-05 04:57:50,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.9238578680203045) internal successors, (576), 197 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2021-06-05 04:57:50,933 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2021-06-05 04:57:50,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:50,933 INFO L482 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2021-06-05 04:57:50,933 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:50,933 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2021-06-05 04:57:50,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:50,933 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:50,933 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:50,934 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-06-05 04:57:50,934 INFO L430 AbstractCegarLoop]: === Iteration 100 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:50,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:50,934 INFO L82 PathProgramCache]: Analyzing trace with hash -840638728, now seen corresponding path program 68 times [2021-06-05 04:57:50,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:50,934 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355745845] [2021-06-05 04:57:50,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:50,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:50,971 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:50,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355745845] [2021-06-05 04:57:50,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355745845] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:50,972 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:50,972 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:50,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194670765] [2021-06-05 04:57:50,972 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:50,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:50,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:50,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:50,972 INFO L87 Difference]: Start difference. First operand 198 states and 576 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:51,092 INFO L93 Difference]: Finished difference Result 465 states and 1248 transitions. [2021-06-05 04:57:51,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:51,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:51,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:51,093 INFO L225 Difference]: With dead ends: 465 [2021-06-05 04:57:51,093 INFO L226 Difference]: Without dead ends: 450 [2021-06-05 04:57:51,094 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 63.3ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:51,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-06-05 04:57:51,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 200. [2021-06-05 04:57:51,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.9396984924623117) internal successors, (585), 199 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2021-06-05 04:57:51,102 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2021-06-05 04:57:51,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:51,102 INFO L482 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2021-06-05 04:57:51,102 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,102 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2021-06-05 04:57:51,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:51,103 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:51,103 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:51,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-06-05 04:57:51,103 INFO L430 AbstractCegarLoop]: === Iteration 101 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:51,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:51,103 INFO L82 PathProgramCache]: Analyzing trace with hash -2059274088, now seen corresponding path program 69 times [2021-06-05 04:57:51,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:51,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735913176] [2021-06-05 04:57:51,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:51,141 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:51,141 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735913176] [2021-06-05 04:57:51,142 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735913176] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:51,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:51,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:51,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458876294] [2021-06-05 04:57:51,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:51,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:51,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:51,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:51,142 INFO L87 Difference]: Start difference. First operand 200 states and 585 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:51,249 INFO L93 Difference]: Finished difference Result 442 states and 1203 transitions. [2021-06-05 04:57:51,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:51,249 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:51,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:51,250 INFO L225 Difference]: With dead ends: 442 [2021-06-05 04:57:51,250 INFO L226 Difference]: Without dead ends: 427 [2021-06-05 04:57:51,250 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 64.0ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:51,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-06-05 04:57:51,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 196. [2021-06-05 04:57:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.917948717948718) internal successors, (569), 195 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2021-06-05 04:57:51,256 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2021-06-05 04:57:51,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:51,256 INFO L482 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2021-06-05 04:57:51,256 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2021-06-05 04:57:51,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:51,258 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:51,258 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:51,259 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-06-05 04:57:51,259 INFO L430 AbstractCegarLoop]: === Iteration 102 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:51,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:51,259 INFO L82 PathProgramCache]: Analyzing trace with hash 1005390608, now seen corresponding path program 70 times [2021-06-05 04:57:51,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:51,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257113575] [2021-06-05 04:57:51,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:51,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:51,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:51,297 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257113575] [2021-06-05 04:57:51,297 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257113575] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:51,297 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:51,297 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:51,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920918048] [2021-06-05 04:57:51,298 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:51,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:51,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:51,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:51,298 INFO L87 Difference]: Start difference. First operand 196 states and 569 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:51,390 INFO L93 Difference]: Finished difference Result 393 states and 1085 transitions. [2021-06-05 04:57:51,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:51,390 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:51,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:51,391 INFO L225 Difference]: With dead ends: 393 [2021-06-05 04:57:51,391 INFO L226 Difference]: Without dead ends: 378 [2021-06-05 04:57:51,391 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 56.1ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:51,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-06-05 04:57:51,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 199. [2021-06-05 04:57:51,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9292929292929295) internal successors, (580), 198 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2021-06-05 04:57:51,395 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2021-06-05 04:57:51,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:51,395 INFO L482 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2021-06-05 04:57:51,395 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,395 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2021-06-05 04:57:51,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:51,395 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:51,395 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:51,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-06-05 04:57:51,396 INFO L430 AbstractCegarLoop]: === Iteration 103 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:51,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:51,396 INFO L82 PathProgramCache]: Analyzing trace with hash 184219092, now seen corresponding path program 71 times [2021-06-05 04:57:51,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:51,396 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585140665] [2021-06-05 04:57:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:51,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:51,436 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:51,436 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585140665] [2021-06-05 04:57:51,436 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585140665] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:51,436 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:51,436 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:51,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410198961] [2021-06-05 04:57:51,437 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:51,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:51,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:51,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:51,437 INFO L87 Difference]: Start difference. First operand 199 states and 580 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:51,529 INFO L93 Difference]: Finished difference Result 391 states and 1089 transitions. [2021-06-05 04:57:51,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:51,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:51,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:51,529 INFO L225 Difference]: With dead ends: 391 [2021-06-05 04:57:51,529 INFO L226 Difference]: Without dead ends: 376 [2021-06-05 04:57:51,530 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 59.0ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:51,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-06-05 04:57:51,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 202. [2021-06-05 04:57:51,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.955223880597015) internal successors, (594), 201 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 594 transitions. [2021-06-05 04:57:51,533 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 594 transitions. Word has length 17 [2021-06-05 04:57:51,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:51,533 INFO L482 AbstractCegarLoop]: Abstraction has 202 states and 594 transitions. [2021-06-05 04:57:51,533 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,533 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 594 transitions. [2021-06-05 04:57:51,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:51,533 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:51,533 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:51,533 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-06-05 04:57:51,533 INFO L430 AbstractCegarLoop]: === Iteration 104 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:51,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:51,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1514501296, now seen corresponding path program 72 times [2021-06-05 04:57:51,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:51,534 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876523742] [2021-06-05 04:57:51,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:51,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:51,594 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:51,594 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876523742] [2021-06-05 04:57:51,594 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876523742] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:51,594 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:51,594 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:51,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521328472] [2021-06-05 04:57:51,595 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:51,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:51,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:51,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:51,595 INFO L87 Difference]: Start difference. First operand 202 states and 594 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:51,681 INFO L93 Difference]: Finished difference Result 368 states and 1044 transitions. [2021-06-05 04:57:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:51,681 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:51,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:51,682 INFO L225 Difference]: With dead ends: 368 [2021-06-05 04:57:51,682 INFO L226 Difference]: Without dead ends: 353 [2021-06-05 04:57:51,682 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 80.7ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-06-05 04:57:51,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 196. [2021-06-05 04:57:51,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.917948717948718) internal successors, (569), 195 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2021-06-05 04:57:51,685 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2021-06-05 04:57:51,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:51,685 INFO L482 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2021-06-05 04:57:51,685 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,685 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2021-06-05 04:57:51,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:51,685 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:51,685 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:51,685 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-06-05 04:57:51,685 INFO L430 AbstractCegarLoop]: === Iteration 105 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:51,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:51,686 INFO L82 PathProgramCache]: Analyzing trace with hash 81063412, now seen corresponding path program 73 times [2021-06-05 04:57:51,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:51,686 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016457272] [2021-06-05 04:57:51,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:51,722 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:51,722 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016457272] [2021-06-05 04:57:51,722 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016457272] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:51,722 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:51,722 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:51,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425934273] [2021-06-05 04:57:51,722 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:51,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:51,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:51,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:51,723 INFO L87 Difference]: Start difference. First operand 196 states and 569 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:51,813 INFO L93 Difference]: Finished difference Result 445 states and 1229 transitions. [2021-06-05 04:57:51,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:51,814 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:51,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:51,814 INFO L225 Difference]: With dead ends: 445 [2021-06-05 04:57:51,814 INFO L226 Difference]: Without dead ends: 430 [2021-06-05 04:57:51,814 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:51,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-06-05 04:57:51,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 199. [2021-06-05 04:57:51,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9494949494949494) internal successors, (584), 198 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2021-06-05 04:57:51,818 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2021-06-05 04:57:51,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:51,818 INFO L482 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2021-06-05 04:57:51,818 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,819 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2021-06-05 04:57:51,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:51,819 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:51,819 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:51,819 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-06-05 04:57:51,819 INFO L430 AbstractCegarLoop]: === Iteration 106 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:51,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:51,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1137571948, now seen corresponding path program 74 times [2021-06-05 04:57:51,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:51,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78746220] [2021-06-05 04:57:51,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:51,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:51,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:51,855 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78746220] [2021-06-05 04:57:51,855 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78746220] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:51,855 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:51,855 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:51,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668348569] [2021-06-05 04:57:51,855 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:51,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:51,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:51,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:51,856 INFO L87 Difference]: Start difference. First operand 199 states and 584 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:51,944 INFO L93 Difference]: Finished difference Result 443 states and 1222 transitions. [2021-06-05 04:57:51,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:51,944 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:51,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:51,944 INFO L225 Difference]: With dead ends: 443 [2021-06-05 04:57:51,945 INFO L226 Difference]: Without dead ends: 428 [2021-06-05 04:57:51,945 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 46.9ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:51,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-06-05 04:57:51,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 197. [2021-06-05 04:57:51,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.933673469387755) internal successors, (575), 196 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2021-06-05 04:57:51,948 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2021-06-05 04:57:51,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:51,948 INFO L482 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2021-06-05 04:57:51,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:51,948 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2021-06-05 04:57:51,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:51,948 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:51,948 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:51,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-06-05 04:57:51,948 INFO L430 AbstractCegarLoop]: === Iteration 107 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:51,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:51,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1070123960, now seen corresponding path program 75 times [2021-06-05 04:57:51,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:51,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089111115] [2021-06-05 04:57:51,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:51,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:51,992 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:51,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089111115] [2021-06-05 04:57:51,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089111115] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:51,992 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:51,992 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:51,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077864236] [2021-06-05 04:57:51,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:51,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:51,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:51,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:51,993 INFO L87 Difference]: Start difference. First operand 197 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:52,094 INFO L93 Difference]: Finished difference Result 437 states and 1201 transitions. [2021-06-05 04:57:52,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:52,094 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:52,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:52,095 INFO L225 Difference]: With dead ends: 437 [2021-06-05 04:57:52,095 INFO L226 Difference]: Without dead ends: 422 [2021-06-05 04:57:52,095 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 54.0ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:52,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-06-05 04:57:52,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 200. [2021-06-05 04:57:52,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.959798994974874) internal successors, (589), 199 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 589 transitions. [2021-06-05 04:57:52,100 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 589 transitions. Word has length 17 [2021-06-05 04:57:52,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:52,100 INFO L482 AbstractCegarLoop]: Abstraction has 200 states and 589 transitions. [2021-06-05 04:57:52,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,100 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 589 transitions. [2021-06-05 04:57:52,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:52,101 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:52,101 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:52,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-06-05 04:57:52,101 INFO L430 AbstractCegarLoop]: === Iteration 108 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:52,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:52,101 INFO L82 PathProgramCache]: Analyzing trace with hash -100065036, now seen corresponding path program 76 times [2021-06-05 04:57:52,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:52,101 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922467615] [2021-06-05 04:57:52,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:52,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:52,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:52,137 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:52,137 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922467615] [2021-06-05 04:57:52,137 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922467615] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:52,137 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:52,138 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:52,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108532153] [2021-06-05 04:57:52,138 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:52,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:52,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:52,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:52,138 INFO L87 Difference]: Start difference. First operand 200 states and 589 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:52,260 INFO L93 Difference]: Finished difference Result 421 states and 1178 transitions. [2021-06-05 04:57:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:52,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:52,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:52,261 INFO L225 Difference]: With dead ends: 421 [2021-06-05 04:57:52,261 INFO L226 Difference]: Without dead ends: 406 [2021-06-05 04:57:52,261 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 57.0ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:52,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-06-05 04:57:52,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 197. [2021-06-05 04:57:52,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.933673469387755) internal successors, (575), 196 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2021-06-05 04:57:52,265 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2021-06-05 04:57:52,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:52,265 INFO L482 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2021-06-05 04:57:52,266 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,266 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2021-06-05 04:57:52,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:52,266 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:52,266 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:52,266 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-06-05 04:57:52,266 INFO L430 AbstractCegarLoop]: === Iteration 109 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:52,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:52,267 INFO L82 PathProgramCache]: Analyzing trace with hash -117002088, now seen corresponding path program 77 times [2021-06-05 04:57:52,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:52,267 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775432190] [2021-06-05 04:57:52,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:52,302 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:52,303 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775432190] [2021-06-05 04:57:52,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775432190] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:52,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:52,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:52,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852033286] [2021-06-05 04:57:52,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:52,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:52,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:52,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:52,304 INFO L87 Difference]: Start difference. First operand 197 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:52,383 INFO L93 Difference]: Finished difference Result 405 states and 1129 transitions. [2021-06-05 04:57:52,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:52,384 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:52,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:52,384 INFO L225 Difference]: With dead ends: 405 [2021-06-05 04:57:52,384 INFO L226 Difference]: Without dead ends: 390 [2021-06-05 04:57:52,384 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:52,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-06-05 04:57:52,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 199. [2021-06-05 04:57:52,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9494949494949494) internal successors, (584), 198 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2021-06-05 04:57:52,387 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2021-06-05 04:57:52,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:52,387 INFO L482 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2021-06-05 04:57:52,387 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,387 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2021-06-05 04:57:52,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:52,388 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:52,388 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:52,388 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-06-05 04:57:52,388 INFO L430 AbstractCegarLoop]: === Iteration 110 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:52,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:52,388 INFO L82 PathProgramCache]: Analyzing trace with hash 1023281748, now seen corresponding path program 78 times [2021-06-05 04:57:52,388 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:52,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745628049] [2021-06-05 04:57:52,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:52,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:52,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:52,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745628049] [2021-06-05 04:57:52,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745628049] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:52,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:52,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:52,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044113180] [2021-06-05 04:57:52,426 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:52,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:52,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:52,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:52,426 INFO L87 Difference]: Start difference. First operand 199 states and 584 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:52,505 INFO L93 Difference]: Finished difference Result 384 states and 1091 transitions. [2021-06-05 04:57:52,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:52,505 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:52,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:52,506 INFO L225 Difference]: With dead ends: 384 [2021-06-05 04:57:52,506 INFO L226 Difference]: Without dead ends: 369 [2021-06-05 04:57:52,506 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 47.1ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:52,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-06-05 04:57:52,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 195. [2021-06-05 04:57:52,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2021-06-05 04:57:52,509 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2021-06-05 04:57:52,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:52,509 INFO L482 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2021-06-05 04:57:52,509 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,509 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2021-06-05 04:57:52,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:52,509 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:52,509 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:52,509 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-06-05 04:57:52,509 INFO L430 AbstractCegarLoop]: === Iteration 111 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:52,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:52,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1228196736, now seen corresponding path program 79 times [2021-06-05 04:57:52,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:52,511 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238823866] [2021-06-05 04:57:52,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:52,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:52,545 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:52,545 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238823866] [2021-06-05 04:57:52,545 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238823866] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:52,545 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:52,545 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:52,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018157947] [2021-06-05 04:57:52,545 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:52,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:52,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:52,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:52,546 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:52,637 INFO L93 Difference]: Finished difference Result 425 states and 1163 transitions. [2021-06-05 04:57:52,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:52,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:52,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:52,638 INFO L225 Difference]: With dead ends: 425 [2021-06-05 04:57:52,638 INFO L226 Difference]: Without dead ends: 410 [2021-06-05 04:57:52,639 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 52.2ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:52,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-06-05 04:57:52,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 200. [2021-06-05 04:57:52,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.9396984924623117) internal successors, (585), 199 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2021-06-05 04:57:52,642 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2021-06-05 04:57:52,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:52,642 INFO L482 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2021-06-05 04:57:52,642 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,642 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2021-06-05 04:57:52,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:52,643 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:52,643 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:52,643 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-06-05 04:57:52,643 INFO L430 AbstractCegarLoop]: === Iteration 112 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:52,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:52,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1848135200, now seen corresponding path program 80 times [2021-06-05 04:57:52,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:52,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746264248] [2021-06-05 04:57:52,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:52,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:52,693 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:52,693 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746264248] [2021-06-05 04:57:52,693 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746264248] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:52,693 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:52,693 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:52,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632769339] [2021-06-05 04:57:52,694 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:52,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:52,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:52,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:52,695 INFO L87 Difference]: Start difference. First operand 200 states and 585 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:52,802 INFO L93 Difference]: Finished difference Result 429 states and 1169 transitions. [2021-06-05 04:57:52,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:52,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:52,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:52,803 INFO L225 Difference]: With dead ends: 429 [2021-06-05 04:57:52,803 INFO L226 Difference]: Without dead ends: 414 [2021-06-05 04:57:52,803 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 61.1ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:52,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-06-05 04:57:52,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 198. [2021-06-05 04:57:52,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.9238578680203045) internal successors, (576), 197 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2021-06-05 04:57:52,807 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2021-06-05 04:57:52,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:52,807 INFO L482 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2021-06-05 04:57:52,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,808 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2021-06-05 04:57:52,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:52,808 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:52,808 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:52,808 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-06-05 04:57:52,808 INFO L430 AbstractCegarLoop]: === Iteration 113 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:52,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:52,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1371120940, now seen corresponding path program 81 times [2021-06-05 04:57:52,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:52,809 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084153040] [2021-06-05 04:57:52,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:52,844 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:52,844 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084153040] [2021-06-05 04:57:52,844 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084153040] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:52,844 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:52,844 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:52,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142461954] [2021-06-05 04:57:52,844 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:52,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:52,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:52,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:52,845 INFO L87 Difference]: Start difference. First operand 198 states and 576 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:52,924 INFO L93 Difference]: Finished difference Result 429 states and 1163 transitions. [2021-06-05 04:57:52,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:52,924 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:52,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:52,925 INFO L225 Difference]: With dead ends: 429 [2021-06-05 04:57:52,925 INFO L226 Difference]: Without dead ends: 414 [2021-06-05 04:57:52,925 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 53.6ms TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:52,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-06-05 04:57:52,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 196. [2021-06-05 04:57:52,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.917948717948718) internal successors, (569), 195 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2021-06-05 04:57:52,928 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2021-06-05 04:57:52,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:52,928 INFO L482 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2021-06-05 04:57:52,928 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:52,928 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2021-06-05 04:57:52,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:52,928 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:52,928 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:52,929 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-06-05 04:57:52,929 INFO L430 AbstractCegarLoop]: === Iteration 114 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:52,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:52,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1608879492, now seen corresponding path program 82 times [2021-06-05 04:57:52,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:52,929 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727209780] [2021-06-05 04:57:52,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:52,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:52,969 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:52,969 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727209780] [2021-06-05 04:57:52,969 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727209780] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:52,969 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:52,969 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:52,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978674370] [2021-06-05 04:57:52,969 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:52,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:52,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:52,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:52,970 INFO L87 Difference]: Start difference. First operand 196 states and 569 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:53,079 INFO L93 Difference]: Finished difference Result 451 states and 1224 transitions. [2021-06-05 04:57:53,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:53,079 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:53,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:53,080 INFO L225 Difference]: With dead ends: 451 [2021-06-05 04:57:53,080 INFO L226 Difference]: Without dead ends: 436 [2021-06-05 04:57:53,080 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 51.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:53,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-06-05 04:57:53,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 199. [2021-06-05 04:57:53,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9494949494949494) internal successors, (584), 198 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2021-06-05 04:57:53,084 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2021-06-05 04:57:53,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:53,085 INFO L482 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2021-06-05 04:57:53,085 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,085 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2021-06-05 04:57:53,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:53,085 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:53,085 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:53,085 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-06-05 04:57:53,085 INFO L430 AbstractCegarLoop]: === Iteration 115 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:53,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:53,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1467452444, now seen corresponding path program 83 times [2021-06-05 04:57:53,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:53,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400448615] [2021-06-05 04:57:53,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:53,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:53,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:53,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400448615] [2021-06-05 04:57:53,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400448615] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:53,128 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:53,128 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:53,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777123470] [2021-06-05 04:57:53,128 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:53,129 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:53,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:53,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:53,129 INFO L87 Difference]: Start difference. First operand 199 states and 584 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:53,235 INFO L93 Difference]: Finished difference Result 455 states and 1230 transitions. [2021-06-05 04:57:53,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:53,235 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:53,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:53,236 INFO L225 Difference]: With dead ends: 455 [2021-06-05 04:57:53,236 INFO L226 Difference]: Without dead ends: 440 [2021-06-05 04:57:53,236 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 59.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:53,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-06-05 04:57:53,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 197. [2021-06-05 04:57:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.933673469387755) internal successors, (575), 196 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2021-06-05 04:57:53,241 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2021-06-05 04:57:53,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:53,241 INFO L482 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2021-06-05 04:57:53,241 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,241 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2021-06-05 04:57:53,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:53,241 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:53,241 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:53,241 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-06-05 04:57:53,242 INFO L430 AbstractCegarLoop]: === Iteration 116 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:53,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:53,242 INFO L82 PathProgramCache]: Analyzing trace with hash -619818944, now seen corresponding path program 84 times [2021-06-05 04:57:53,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:53,242 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600352515] [2021-06-05 04:57:53,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:53,283 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:53,283 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600352515] [2021-06-05 04:57:53,283 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600352515] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:53,283 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:53,283 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:53,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328917557] [2021-06-05 04:57:53,283 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:53,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:53,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:53,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:53,284 INFO L87 Difference]: Start difference. First operand 197 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:53,380 INFO L93 Difference]: Finished difference Result 422 states and 1158 transitions. [2021-06-05 04:57:53,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:53,381 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:53,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:53,382 INFO L225 Difference]: With dead ends: 422 [2021-06-05 04:57:53,382 INFO L226 Difference]: Without dead ends: 407 [2021-06-05 04:57:53,382 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 56.2ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:53,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-06-05 04:57:53,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 200. [2021-06-05 04:57:53,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.959798994974874) internal successors, (589), 199 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 589 transitions. [2021-06-05 04:57:53,386 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 589 transitions. Word has length 17 [2021-06-05 04:57:53,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:53,386 INFO L482 AbstractCegarLoop]: Abstraction has 200 states and 589 transitions. [2021-06-05 04:57:53,386 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,386 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 589 transitions. [2021-06-05 04:57:53,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:53,387 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:53,387 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:53,387 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-06-05 04:57:53,387 INFO L430 AbstractCegarLoop]: === Iteration 117 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:53,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:53,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1790007940, now seen corresponding path program 85 times [2021-06-05 04:57:53,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:53,387 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020970334] [2021-06-05 04:57:53,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:53,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:53,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:53,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:53,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020970334] [2021-06-05 04:57:53,429 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020970334] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:53,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:53,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:53,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217151249] [2021-06-05 04:57:53,429 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:53,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:53,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:53,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:53,429 INFO L87 Difference]: Start difference. First operand 200 states and 589 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:53,507 INFO L93 Difference]: Finished difference Result 406 states and 1135 transitions. [2021-06-05 04:57:53,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:53,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:53,508 INFO L225 Difference]: With dead ends: 406 [2021-06-05 04:57:53,508 INFO L226 Difference]: Without dead ends: 391 [2021-06-05 04:57:53,508 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 52.6ms TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:53,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-06-05 04:57:53,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 197. [2021-06-05 04:57:53,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.933673469387755) internal successors, (575), 196 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2021-06-05 04:57:53,511 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2021-06-05 04:57:53,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:53,511 INFO L482 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2021-06-05 04:57:53,511 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,511 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2021-06-05 04:57:53,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:53,512 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:53,512 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:53,512 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-06-05 04:57:53,512 INFO L430 AbstractCegarLoop]: === Iteration 118 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:53,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:53,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1806944992, now seen corresponding path program 86 times [2021-06-05 04:57:53,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:53,512 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2625500] [2021-06-05 04:57:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:53,556 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:53,556 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2625500] [2021-06-05 04:57:53,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2625500] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:53,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:53,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:53,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437115481] [2021-06-05 04:57:53,556 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:53,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:53,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:53,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:53,557 INFO L87 Difference]: Start difference. First operand 197 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:53,664 INFO L93 Difference]: Finished difference Result 440 states and 1205 transitions. [2021-06-05 04:57:53,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:53,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:53,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:53,665 INFO L225 Difference]: With dead ends: 440 [2021-06-05 04:57:53,665 INFO L226 Difference]: Without dead ends: 425 [2021-06-05 04:57:53,666 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 56.2ms TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:53,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-06-05 04:57:53,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 199. [2021-06-05 04:57:53,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9494949494949494) internal successors, (584), 198 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2021-06-05 04:57:53,670 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2021-06-05 04:57:53,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:53,670 INFO L482 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2021-06-05 04:57:53,670 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,670 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2021-06-05 04:57:53,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:53,670 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:53,671 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:53,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-06-05 04:57:53,671 INFO L430 AbstractCegarLoop]: === Iteration 119 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:53,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:53,671 INFO L82 PathProgramCache]: Analyzing trace with hash -666661156, now seen corresponding path program 87 times [2021-06-05 04:57:53,671 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:53,671 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588510505] [2021-06-05 04:57:53,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:53,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:53,707 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:53,708 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588510505] [2021-06-05 04:57:53,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588510505] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:53,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:53,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:53,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424700594] [2021-06-05 04:57:53,708 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:53,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:53,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:53,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:53,709 INFO L87 Difference]: Start difference. First operand 199 states and 584 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:53,787 INFO L93 Difference]: Finished difference Result 419 states and 1167 transitions. [2021-06-05 04:57:53,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:53,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:53,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:53,788 INFO L225 Difference]: With dead ends: 419 [2021-06-05 04:57:53,788 INFO L226 Difference]: Without dead ends: 404 [2021-06-05 04:57:53,792 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 49.3ms TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:57:53,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-06-05 04:57:53,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 196. [2021-06-05 04:57:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.917948717948718) internal successors, (569), 195 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2021-06-05 04:57:53,795 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2021-06-05 04:57:53,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:53,795 INFO L482 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2021-06-05 04:57:53,795 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,795 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2021-06-05 04:57:53,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:53,796 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:53,796 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:53,796 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-06-05 04:57:53,796 INFO L430 AbstractCegarLoop]: === Iteration 120 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:53,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:53,796 INFO L82 PathProgramCache]: Analyzing trace with hash 201773648, now seen corresponding path program 88 times [2021-06-05 04:57:53,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:53,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036870390] [2021-06-05 04:57:53,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:53,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:53,835 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:53,835 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036870390] [2021-06-05 04:57:53,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036870390] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:53,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:53,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:53,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115545341] [2021-06-05 04:57:53,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:53,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:53,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:53,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:53,836 INFO L87 Difference]: Start difference. First operand 196 states and 569 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:53,930 INFO L93 Difference]: Finished difference Result 382 states and 1052 transitions. [2021-06-05 04:57:53,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:53,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:53,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:53,931 INFO L225 Difference]: With dead ends: 382 [2021-06-05 04:57:53,931 INFO L226 Difference]: Without dead ends: 367 [2021-06-05 04:57:53,931 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 63.3ms TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:53,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-06-05 04:57:53,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 198. [2021-06-05 04:57:53,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.9238578680203045) internal successors, (576), 197 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2021-06-05 04:57:53,935 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2021-06-05 04:57:53,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:53,935 INFO L482 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2021-06-05 04:57:53,935 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:53,935 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2021-06-05 04:57:53,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:53,935 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:53,935 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:53,936 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-06-05 04:57:53,936 INFO L430 AbstractCegarLoop]: === Iteration 121 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:53,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:53,936 INFO L82 PathProgramCache]: Analyzing trace with hash 1159324884, now seen corresponding path program 89 times [2021-06-05 04:57:53,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:53,936 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046010948] [2021-06-05 04:57:53,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:53,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:53,970 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:53,971 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046010948] [2021-06-05 04:57:53,971 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046010948] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:53,971 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:53,971 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:53,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039051352] [2021-06-05 04:57:53,971 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:53,971 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:53,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:53,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:53,972 INFO L87 Difference]: Start difference. First operand 198 states and 576 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:54,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:54,064 INFO L93 Difference]: Finished difference Result 383 states and 1063 transitions. [2021-06-05 04:57:54,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:54,064 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:54,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:54,064 INFO L225 Difference]: With dead ends: 383 [2021-06-05 04:57:54,064 INFO L226 Difference]: Without dead ends: 368 [2021-06-05 04:57:54,065 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 53.6ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:54,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2021-06-05 04:57:54,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 200. [2021-06-05 04:57:54,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.9396984924623117) internal successors, (585), 199 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:54,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2021-06-05 04:57:54,067 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2021-06-05 04:57:54,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:54,068 INFO L482 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2021-06-05 04:57:54,068 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:54,068 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2021-06-05 04:57:54,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-06-05 04:57:54,068 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:54,068 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:54,068 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-06-05 04:57:54,068 INFO L430 AbstractCegarLoop]: === Iteration 122 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:54,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:54,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1995358576, now seen corresponding path program 90 times [2021-06-05 04:57:54,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:54,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922159189] [2021-06-05 04:57:54,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:54,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:54,112 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:54,112 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922159189] [2021-06-05 04:57:54,112 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922159189] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 04:57:54,112 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 04:57:54,112 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 04:57:54,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649604617] [2021-06-05 04:57:54,113 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:57:54,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:54,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:57:54,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:57:54,113 INFO L87 Difference]: Start difference. First operand 200 states and 585 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:54,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:54,222 INFO L93 Difference]: Finished difference Result 362 states and 1025 transitions. [2021-06-05 04:57:54,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:54,222 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-06-05 04:57:54,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:54,223 INFO L225 Difference]: With dead ends: 362 [2021-06-05 04:57:54,223 INFO L226 Difference]: Without dead ends: 347 [2021-06-05 04:57:54,223 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 63.4ms TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:54,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-06-05 04:57:54,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 195. [2021-06-05 04:57:54,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:54,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2021-06-05 04:57:54,227 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2021-06-05 04:57:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:54,227 INFO L482 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2021-06-05 04:57:54,227 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:54,227 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2021-06-05 04:57:54,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:57:54,228 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:54,228 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:54,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-06-05 04:57:54,228 INFO L430 AbstractCegarLoop]: === Iteration 123 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:54,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:54,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1303103675, now seen corresponding path program 1 times [2021-06-05 04:57:54,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:54,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289906337] [2021-06-05 04:57:54,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:54,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:54,275 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:54,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289906337] [2021-06-05 04:57:54,276 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289906337] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:54,276 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680428507] [2021-06-05 04:57:54,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:57:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:54,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 04:57:54,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:57:54,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:54,556 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680428507] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:54,556 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:57:54,556 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 04:57:54,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726716080] [2021-06-05 04:57:54,557 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 04:57:54,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:54,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 04:57:54,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:54,557 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:54,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:54,716 INFO L93 Difference]: Finished difference Result 363 states and 1031 transitions. [2021-06-05 04:57:54,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:54,717 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:57:54,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:54,718 INFO L225 Difference]: With dead ends: 363 [2021-06-05 04:57:54,718 INFO L226 Difference]: Without dead ends: 344 [2021-06-05 04:57:54,718 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 135.8ms TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2021-06-05 04:57:54,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-06-05 04:57:54,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 208. [2021-06-05 04:57:54,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.9613526570048307) internal successors, (613), 207 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:54,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 613 transitions. [2021-06-05 04:57:54,725 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 613 transitions. Word has length 18 [2021-06-05 04:57:54,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:54,725 INFO L482 AbstractCegarLoop]: Abstraction has 208 states and 613 transitions. [2021-06-05 04:57:54,725 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.4615384615384617) internal successors, (32), 13 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:54,725 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 613 transitions. [2021-06-05 04:57:54,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:57:54,726 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:54,726 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:54,940 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2021-06-05 04:57:54,941 INFO L430 AbstractCegarLoop]: === Iteration 124 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:54,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:54,941 INFO L82 PathProgramCache]: Analyzing trace with hash -95550603, now seen corresponding path program 2 times [2021-06-05 04:57:54,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:54,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966443749] [2021-06-05 04:57:54,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:54,978 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:54,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966443749] [2021-06-05 04:57:54,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966443749] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:54,978 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551281333] [2021-06-05 04:57:54,978 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:57:55,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:57:55,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:57:55,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:57:55,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:57:55,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:55,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551281333] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:55,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:57:55,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-06-05 04:57:55,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023749441] [2021-06-05 04:57:55,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 04:57:55,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:55,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 04:57:55,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-06-05 04:57:55,115 INFO L87 Difference]: Start difference. First operand 208 states and 613 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:55,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:55,173 INFO L93 Difference]: Finished difference Result 354 states and 1020 transitions. [2021-06-05 04:57:55,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:57:55,174 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:57:55,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:55,175 INFO L225 Difference]: With dead ends: 354 [2021-06-05 04:57:55,175 INFO L226 Difference]: Without dead ends: 319 [2021-06-05 04:57:55,175 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 42.5ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:57:55,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-06-05 04:57:55,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 216. [2021-06-05 04:57:55,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 2.9813953488372094) internal successors, (641), 215 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:55,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 641 transitions. [2021-06-05 04:57:55,179 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 641 transitions. Word has length 18 [2021-06-05 04:57:55,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:55,179 INFO L482 AbstractCegarLoop]: Abstraction has 216 states and 641 transitions. [2021-06-05 04:57:55,179 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:55,179 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 641 transitions. [2021-06-05 04:57:55,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:57:55,179 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:55,180 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:55,380 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2021-06-05 04:57:55,380 INFO L430 AbstractCegarLoop]: === Iteration 125 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:55,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:55,381 INFO L82 PathProgramCache]: Analyzing trace with hash -725187835, now seen corresponding path program 1 times [2021-06-05 04:57:55,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:55,381 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954976080] [2021-06-05 04:57:55,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:55,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:55,442 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:55,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954976080] [2021-06-05 04:57:55,442 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954976080] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:55,442 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73515430] [2021-06-05 04:57:55,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:57:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:55,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 04:57:55,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:57:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:55,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73515430] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:55,608 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:57:55,609 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 04:57:55,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866462206] [2021-06-05 04:57:55,609 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 04:57:55,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:55,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 04:57:55,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:55,610 INFO L87 Difference]: Start difference. First operand 216 states and 641 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:55,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:55,862 INFO L93 Difference]: Finished difference Result 382 states and 1057 transitions. [2021-06-05 04:57:55,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:55,862 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:57:55,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:55,863 INFO L225 Difference]: With dead ends: 382 [2021-06-05 04:57:55,864 INFO L226 Difference]: Without dead ends: 342 [2021-06-05 04:57:55,864 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 237.9ms TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-06-05 04:57:55,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2021-06-05 04:57:55,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 221. [2021-06-05 04:57:55,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 2.9727272727272727) internal successors, (654), 220 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 654 transitions. [2021-06-05 04:57:55,867 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 654 transitions. Word has length 18 [2021-06-05 04:57:55,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:55,868 INFO L482 AbstractCegarLoop]: Abstraction has 221 states and 654 transitions. [2021-06-05 04:57:55,868 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:55,868 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 654 transitions. [2021-06-05 04:57:55,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:57:55,868 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:55,868 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:56,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2021-06-05 04:57:56,073 INFO L430 AbstractCegarLoop]: === Iteration 126 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:56,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:56,073 INFO L82 PathProgramCache]: Analyzing trace with hash -809235458, now seen corresponding path program 1 times [2021-06-05 04:57:56,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:56,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983170551] [2021-06-05 04:57:56,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:56,118 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:56,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983170551] [2021-06-05 04:57:56,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983170551] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:56,118 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265406835] [2021-06-05 04:57:56,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:57:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:56,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:57:56,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:57:56,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:56,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265406835] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:56,230 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:57:56,230 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-06-05 04:57:56,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627210385] [2021-06-05 04:57:56,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:57:56,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:56,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:57:56,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:57:56,231 INFO L87 Difference]: Start difference. First operand 221 states and 654 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:56,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:56,366 INFO L93 Difference]: Finished difference Result 389 states and 1088 transitions. [2021-06-05 04:57:56,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:57:56,366 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:57:56,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:56,372 INFO L225 Difference]: With dead ends: 389 [2021-06-05 04:57:56,372 INFO L226 Difference]: Without dead ends: 330 [2021-06-05 04:57:56,373 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 122.9ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:56,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-06-05 04:57:56,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 239. [2021-06-05 04:57:56,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 2.936974789915966) internal successors, (699), 238 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:56,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 699 transitions. [2021-06-05 04:57:56,378 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 699 transitions. Word has length 18 [2021-06-05 04:57:56,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:56,378 INFO L482 AbstractCegarLoop]: Abstraction has 239 states and 699 transitions. [2021-06-05 04:57:56,378 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:56,378 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 699 transitions. [2021-06-05 04:57:56,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:57:56,381 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:56,381 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:56,605 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:57:56,605 INFO L430 AbstractCegarLoop]: === Iteration 127 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:56,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:56,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1122105489, now seen corresponding path program 2 times [2021-06-05 04:57:56,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:56,605 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661403645] [2021-06-05 04:57:56,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:56,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:56,681 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:56,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661403645] [2021-06-05 04:57:56,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661403645] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:56,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770030538] [2021-06-05 04:57:56,682 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:57:56,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:57:56,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:57:56,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:57:56,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:57:56,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:56,822 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770030538] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:56,822 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:57:56,822 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2021-06-05 04:57:56,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106557584] [2021-06-05 04:57:56,823 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 04:57:56,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:56,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 04:57:56,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:57:56,823 INFO L87 Difference]: Start difference. First operand 239 states and 699 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:57,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:57,288 INFO L93 Difference]: Finished difference Result 711 states and 1983 transitions. [2021-06-05 04:57:57,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 04:57:57,288 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:57:57,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:57,290 INFO L225 Difference]: With dead ends: 711 [2021-06-05 04:57:57,290 INFO L226 Difference]: Without dead ends: 612 [2021-06-05 04:57:57,290 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 327.6ms TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2021-06-05 04:57:57,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-06-05 04:57:57,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 271. [2021-06-05 04:57:57,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 3.0555555555555554) internal successors, (825), 270 states have internal predecessors, (825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:57,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 825 transitions. [2021-06-05 04:57:57,298 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 825 transitions. Word has length 18 [2021-06-05 04:57:57,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:57,298 INFO L482 AbstractCegarLoop]: Abstraction has 271 states and 825 transitions. [2021-06-05 04:57:57,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:57,298 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 825 transitions. [2021-06-05 04:57:57,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:57:57,299 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:57,299 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:57,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable138 [2021-06-05 04:57:57,517 INFO L430 AbstractCegarLoop]: === Iteration 128 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:57,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:57,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1300893727, now seen corresponding path program 3 times [2021-06-05 04:57:57,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:57,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396451612] [2021-06-05 04:57:57,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:57,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:57,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:57,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:57,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396451612] [2021-06-05 04:57:57,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396451612] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:57,589 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670330228] [2021-06-05 04:57:57,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:57:57,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 04:57:57,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:57:57,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:57:57,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:57:57,707 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:57,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670330228] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:57,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:57:57,709 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-06-05 04:57:57,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961918034] [2021-06-05 04:57:57,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 04:57:57,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:57,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 04:57:57,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:57,712 INFO L87 Difference]: Start difference. First operand 271 states and 825 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:58,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:58,177 INFO L93 Difference]: Finished difference Result 703 states and 1933 transitions. [2021-06-05 04:57:58,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 04:57:58,177 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:57:58,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:58,178 INFO L225 Difference]: With dead ends: 703 [2021-06-05 04:57:58,178 INFO L226 Difference]: Without dead ends: 610 [2021-06-05 04:57:58,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 345.9ms TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2021-06-05 04:57:58,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-06-05 04:57:58,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 273. [2021-06-05 04:57:58,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 272 states have (on average 3.0183823529411766) internal successors, (821), 272 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:58,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 821 transitions. [2021-06-05 04:57:58,185 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 821 transitions. Word has length 18 [2021-06-05 04:57:58,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:58,185 INFO L482 AbstractCegarLoop]: Abstraction has 273 states and 821 transitions. [2021-06-05 04:57:58,185 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:58,185 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 821 transitions. [2021-06-05 04:57:58,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:57:58,185 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:58,186 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:58,408 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:57:58,408 INFO L430 AbstractCegarLoop]: === Iteration 129 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:58,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:58,408 INFO L82 PathProgramCache]: Analyzing trace with hash -505958907, now seen corresponding path program 4 times [2021-06-05 04:57:58,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:58,409 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110940257] [2021-06-05 04:57:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:58,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:58,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110940257] [2021-06-05 04:57:58,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110940257] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:58,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388463295] [2021-06-05 04:57:58,483 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:57:58,512 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 04:57:58,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:57:58,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 04:57:58,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:57:58,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:58,597 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388463295] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:58,597 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:57:58,597 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-06-05 04:57:58,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11601075] [2021-06-05 04:57:58,598 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 04:57:58,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:58,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 04:57:58,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-06-05 04:57:58,598 INFO L87 Difference]: Start difference. First operand 273 states and 821 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:58,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:58,776 INFO L93 Difference]: Finished difference Result 491 states and 1371 transitions. [2021-06-05 04:57:58,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:58,777 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:57:58,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:58,778 INFO L225 Difference]: With dead ends: 491 [2021-06-05 04:57:58,778 INFO L226 Difference]: Without dead ends: 451 [2021-06-05 04:57:58,778 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 190.6ms TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2021-06-05 04:57:58,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-06-05 04:57:58,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 276. [2021-06-05 04:57:58,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 3.0036363636363634) internal successors, (826), 275 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:58,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 826 transitions. [2021-06-05 04:57:58,783 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 826 transitions. Word has length 18 [2021-06-05 04:57:58,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:58,784 INFO L482 AbstractCegarLoop]: Abstraction has 276 states and 826 transitions. [2021-06-05 04:57:58,784 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:58,784 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 826 transitions. [2021-06-05 04:57:58,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:57:58,784 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:58,784 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:59,000 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2021-06-05 04:57:59,001 INFO L430 AbstractCegarLoop]: === Iteration 130 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:59,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:59,001 INFO L82 PathProgramCache]: Analyzing trace with hash -534360167, now seen corresponding path program 5 times [2021-06-05 04:57:59,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:59,001 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297724192] [2021-06-05 04:57:59,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:59,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:59,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:59,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297724192] [2021-06-05 04:57:59,073 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297724192] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:59,073 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988547504] [2021-06-05 04:57:59,073 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:57:59,113 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:57:59,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:57:59,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 04:57:59,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:57:59,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:59,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988547504] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:59,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:57:59,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-06-05 04:57:59,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910136733] [2021-06-05 04:57:59,217 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 04:57:59,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:59,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 04:57:59,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-06-05 04:57:59,217 INFO L87 Difference]: Start difference. First operand 276 states and 826 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:59,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:57:59,415 INFO L93 Difference]: Finished difference Result 462 states and 1278 transitions. [2021-06-05 04:57:59,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:57:59,415 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:57:59,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:57:59,416 INFO L225 Difference]: With dead ends: 462 [2021-06-05 04:57:59,416 INFO L226 Difference]: Without dead ends: 431 [2021-06-05 04:57:59,416 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 220.6ms TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2021-06-05 04:57:59,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-06-05 04:57:59,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 279. [2021-06-05 04:57:59,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 2.9892086330935252) internal successors, (831), 278 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:59,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 831 transitions. [2021-06-05 04:57:59,420 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 831 transitions. Word has length 18 [2021-06-05 04:57:59,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:57:59,420 INFO L482 AbstractCegarLoop]: Abstraction has 279 states and 831 transitions. [2021-06-05 04:57:59,420 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:57:59,420 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 831 transitions. [2021-06-05 04:57:59,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:57:59,421 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:57:59,421 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:57:59,621 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable149 [2021-06-05 04:57:59,621 INFO L430 AbstractCegarLoop]: === Iteration 131 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:57:59,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:57:59,622 INFO L82 PathProgramCache]: Analyzing trace with hash 1888639049, now seen corresponding path program 6 times [2021-06-05 04:57:59,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:57:59,622 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474109784] [2021-06-05 04:57:59,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:57:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:57:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:59,679 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:57:59,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474109784] [2021-06-05 04:57:59,679 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474109784] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:59,679 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [591584312] [2021-06-05 04:57:59,679 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:57:59,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 04:57:59,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:57:59,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:57:59,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:57:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:57:59,811 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [591584312] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:57:59,811 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:57:59,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-06-05 04:57:59,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023308693] [2021-06-05 04:57:59,811 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 04:57:59,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:57:59,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 04:57:59,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:57:59,812 INFO L87 Difference]: Start difference. First operand 279 states and 831 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:00,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:00,313 INFO L93 Difference]: Finished difference Result 579 states and 1609 transitions. [2021-06-05 04:58:00,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 04:58:00,314 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:00,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:00,315 INFO L225 Difference]: With dead ends: 579 [2021-06-05 04:58:00,315 INFO L226 Difference]: Without dead ends: 481 [2021-06-05 04:58:00,315 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 355.7ms TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2021-06-05 04:58:00,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-06-05 04:58:00,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 277. [2021-06-05 04:58:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 3.0543478260869565) internal successors, (843), 276 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:00,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 843 transitions. [2021-06-05 04:58:00,321 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 843 transitions. Word has length 18 [2021-06-05 04:58:00,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:00,321 INFO L482 AbstractCegarLoop]: Abstraction has 277 states and 843 transitions. [2021-06-05 04:58:00,321 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:00,321 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 843 transitions. [2021-06-05 04:58:00,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:00,322 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:00,322 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:00,536 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:00,537 INFO L430 AbstractCegarLoop]: === Iteration 132 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:00,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:00,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1338392489, now seen corresponding path program 7 times [2021-06-05 04:58:00,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:00,537 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843940052] [2021-06-05 04:58:00,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:00,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:00,584 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:00,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843940052] [2021-06-05 04:58:00,585 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843940052] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:00,585 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791601474] [2021-06-05 04:58:00,585 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:00,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 04:58:00,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:00,714 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791601474] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:00,714 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:00,714 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-06-05 04:58:00,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863870542] [2021-06-05 04:58:00,714 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 04:58:00,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:00,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 04:58:00,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:58:00,715 INFO L87 Difference]: Start difference. First operand 277 states and 843 transitions. Second operand has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:00,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:00,941 INFO L93 Difference]: Finished difference Result 557 states and 1551 transitions. [2021-06-05 04:58:00,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:58:00,942 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:00,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:00,943 INFO L225 Difference]: With dead ends: 557 [2021-06-05 04:58:00,943 INFO L226 Difference]: Without dead ends: 517 [2021-06-05 04:58:00,943 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 197.5ms TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2021-06-05 04:58:00,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-06-05 04:58:00,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 284. [2021-06-05 04:58:00,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 3.060070671378092) internal successors, (866), 283 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:00,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 866 transitions. [2021-06-05 04:58:00,949 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 866 transitions. Word has length 18 [2021-06-05 04:58:00,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:00,949 INFO L482 AbstractCegarLoop]: Abstraction has 284 states and 866 transitions. [2021-06-05 04:58:00,949 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5) internal successors, (30), 12 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:00,950 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 866 transitions. [2021-06-05 04:58:00,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:00,950 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:00,950 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:01,168 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2021-06-05 04:58:01,168 INFO L430 AbstractCegarLoop]: === Iteration 133 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:01,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:01,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1254344866, now seen corresponding path program 2 times [2021-06-05 04:58:01,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:01,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900301236] [2021-06-05 04:58:01,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:01,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:01,213 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:01,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900301236] [2021-06-05 04:58:01,213 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900301236] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:01,213 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115917120] [2021-06-05 04:58:01,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:01,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:58:01,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:01,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:58:01,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:01,312 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115917120] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:01,312 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:01,312 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-06-05 04:58:01,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990112015] [2021-06-05 04:58:01,312 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:01,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:01,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:01,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:01,312 INFO L87 Difference]: Start difference. First operand 284 states and 866 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:01,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:01,416 INFO L93 Difference]: Finished difference Result 566 states and 1626 transitions. [2021-06-05 04:58:01,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:58:01,416 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:01,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:01,417 INFO L225 Difference]: With dead ends: 566 [2021-06-05 04:58:01,417 INFO L226 Difference]: Without dead ends: 505 [2021-06-05 04:58:01,417 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 92.5ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:58:01,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-06-05 04:58:01,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 300. [2021-06-05 04:58:01,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 3.120401337792642) internal successors, (933), 299 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:01,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 933 transitions. [2021-06-05 04:58:01,423 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 933 transitions. Word has length 18 [2021-06-05 04:58:01,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:01,424 INFO L482 AbstractCegarLoop]: Abstraction has 300 states and 933 transitions. [2021-06-05 04:58:01,424 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:01,424 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 933 transitions. [2021-06-05 04:58:01,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:01,424 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:01,424 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:01,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2021-06-05 04:58:01,645 INFO L430 AbstractCegarLoop]: === Iteration 134 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:01,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:01,645 INFO L82 PathProgramCache]: Analyzing trace with hash 2042464585, now seen corresponding path program 8 times [2021-06-05 04:58:01,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:01,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764414118] [2021-06-05 04:58:01,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:01,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:01,686 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:01,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764414118] [2021-06-05 04:58:01,686 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764414118] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:01,686 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050758888] [2021-06-05 04:58:01,686 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:01,715 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:58:01,715 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:01,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:58:01,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:01,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:01,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050758888] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:01,786 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:01,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-06-05 04:58:01,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332197087] [2021-06-05 04:58:01,787 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:58:01,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:01,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:58:01,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:58:01,787 INFO L87 Difference]: Start difference. First operand 300 states and 933 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:01,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:01,894 INFO L93 Difference]: Finished difference Result 439 states and 1262 transitions. [2021-06-05 04:58:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:58:01,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:01,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:01,895 INFO L225 Difference]: With dead ends: 439 [2021-06-05 04:58:01,895 INFO L226 Difference]: Without dead ends: 381 [2021-06-05 04:58:01,895 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 118.6ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:58:01,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2021-06-05 04:58:01,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 296. [2021-06-05 04:58:01,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 3.0406779661016947) internal successors, (897), 295 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:01,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 897 transitions. [2021-06-05 04:58:01,902 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 897 transitions. Word has length 18 [2021-06-05 04:58:01,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:01,902 INFO L482 AbstractCegarLoop]: Abstraction has 296 states and 897 transitions. [2021-06-05 04:58:01,902 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:01,902 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 897 transitions. [2021-06-05 04:58:01,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:01,903 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:01,904 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:02,108 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:02,109 INFO L430 AbstractCegarLoop]: === Iteration 135 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:02,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:02,109 INFO L82 PathProgramCache]: Analyzing trace with hash -1866597709, now seen corresponding path program 3 times [2021-06-05 04:58:02,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:02,109 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628555983] [2021-06-05 04:58:02,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:02,164 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:02,164 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:02,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628555983] [2021-06-05 04:58:02,164 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628555983] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:02,164 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690917504] [2021-06-05 04:58:02,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:02,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 04:58:02,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:02,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:58:02,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:02,265 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:02,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690917504] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:02,266 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:02,266 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2021-06-05 04:58:02,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894226957] [2021-06-05 04:58:02,266 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 04:58:02,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:02,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 04:58:02,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:58:02,267 INFO L87 Difference]: Start difference. First operand 296 states and 897 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:02,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:02,561 INFO L93 Difference]: Finished difference Result 627 states and 1772 transitions. [2021-06-05 04:58:02,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 04:58:02,562 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:02,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:02,563 INFO L225 Difference]: With dead ends: 627 [2021-06-05 04:58:02,563 INFO L226 Difference]: Without dead ends: 553 [2021-06-05 04:58:02,563 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 237.8ms TimeCoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2021-06-05 04:58:02,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-06-05 04:58:02,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 326. [2021-06-05 04:58:02,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 3.076923076923077) internal successors, (1000), 325 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:02,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 1000 transitions. [2021-06-05 04:58:02,570 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 1000 transitions. Word has length 18 [2021-06-05 04:58:02,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:02,570 INFO L482 AbstractCegarLoop]: Abstraction has 326 states and 1000 transitions. [2021-06-05 04:58:02,570 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:02,570 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 1000 transitions. [2021-06-05 04:58:02,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:02,571 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:02,571 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:02,795 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2021-06-05 04:58:02,795 INFO L430 AbstractCegarLoop]: === Iteration 136 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:02,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:02,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1213009967, now seen corresponding path program 4 times [2021-06-05 04:58:02,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:02,796 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365903615] [2021-06-05 04:58:02,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:02,849 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:02,849 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:02,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365903615] [2021-06-05 04:58:02,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365903615] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:02,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814684018] [2021-06-05 04:58:02,850 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:02,881 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 04:58:02,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:02,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 04:58:02,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:02,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:02,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814684018] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:02,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:02,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 04:58:02,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22995802] [2021-06-05 04:58:02,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 04:58:02,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:02,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 04:58:02,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:58:02,985 INFO L87 Difference]: Start difference. First operand 326 states and 1000 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:03,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:03,147 INFO L93 Difference]: Finished difference Result 453 states and 1320 transitions. [2021-06-05 04:58:03,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:58:03,147 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:03,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:03,148 INFO L225 Difference]: With dead ends: 453 [2021-06-05 04:58:03,148 INFO L226 Difference]: Without dead ends: 419 [2021-06-05 04:58:03,149 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 175.9ms TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2021-06-05 04:58:03,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2021-06-05 04:58:03,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 326. [2021-06-05 04:58:03,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 3.0707692307692307) internal successors, (998), 325 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 998 transitions. [2021-06-05 04:58:03,157 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 998 transitions. Word has length 18 [2021-06-05 04:58:03,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:03,157 INFO L482 AbstractCegarLoop]: Abstraction has 326 states and 998 transitions. [2021-06-05 04:58:03,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:03,157 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 998 transitions. [2021-06-05 04:58:03,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:03,158 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:03,158 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:03,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:03,382 INFO L430 AbstractCegarLoop]: === Iteration 137 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:03,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:03,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1861527460, now seen corresponding path program 3 times [2021-06-05 04:58:03,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:03,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212394291] [2021-06-05 04:58:03,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:03,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:03,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:03,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212394291] [2021-06-05 04:58:03,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212394291] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:03,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691157702] [2021-06-05 04:58:03,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:03,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 04:58:03,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:03,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 04:58:03,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:03,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:03,570 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691157702] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:03,570 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:03,570 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2021-06-05 04:58:03,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966259099] [2021-06-05 04:58:03,570 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 04:58:03,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:03,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 04:58:03,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:58:03,571 INFO L87 Difference]: Start difference. First operand 326 states and 998 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:03,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:03,739 INFO L93 Difference]: Finished difference Result 528 states and 1512 transitions. [2021-06-05 04:58:03,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 04:58:03,740 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:03,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:03,741 INFO L225 Difference]: With dead ends: 528 [2021-06-05 04:58:03,741 INFO L226 Difference]: Without dead ends: 440 [2021-06-05 04:58:03,741 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 174.1ms TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2021-06-05 04:58:03,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2021-06-05 04:58:03,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 320. [2021-06-05 04:58:03,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 3.0564263322884013) internal successors, (975), 319 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:03,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 975 transitions. [2021-06-05 04:58:03,747 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 975 transitions. Word has length 18 [2021-06-05 04:58:03,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:03,747 INFO L482 AbstractCegarLoop]: Abstraction has 320 states and 975 transitions. [2021-06-05 04:58:03,747 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:03,747 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 975 transitions. [2021-06-05 04:58:03,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:03,747 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:03,747 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:03,971 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:03,971 INFO L430 AbstractCegarLoop]: === Iteration 138 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:03,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:03,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1726676173, now seen corresponding path program 5 times [2021-06-05 04:58:03,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:03,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739347665] [2021-06-05 04:58:03,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:04,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:04,000 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:04,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739347665] [2021-06-05 04:58:04,000 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739347665] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:04,000 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625994307] [2021-06-05 04:58:04,000 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:04,028 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:58:04,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:04,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:58:04,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:04,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:04,091 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625994307] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:04,091 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:04,091 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-06-05 04:58:04,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258302335] [2021-06-05 04:58:04,091 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:04,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:04,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:04,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:04,092 INFO L87 Difference]: Start difference. First operand 320 states and 975 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:04,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:04,151 INFO L93 Difference]: Finished difference Result 455 states and 1343 transitions. [2021-06-05 04:58:04,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:58:04,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:04,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:04,152 INFO L225 Difference]: With dead ends: 455 [2021-06-05 04:58:04,152 INFO L226 Difference]: Without dead ends: 405 [2021-06-05 04:58:04,152 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 54.7ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:58:04,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-06-05 04:58:04,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 307. [2021-06-05 04:58:04,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 3.0326797385620914) internal successors, (928), 306 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 928 transitions. [2021-06-05 04:58:04,156 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 928 transitions. Word has length 18 [2021-06-05 04:58:04,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:04,156 INFO L482 AbstractCegarLoop]: Abstraction has 307 states and 928 transitions. [2021-06-05 04:58:04,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:04,156 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 928 transitions. [2021-06-05 04:58:04,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:04,157 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:04,157 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:04,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:04,357 INFO L430 AbstractCegarLoop]: === Iteration 139 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:04,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:04,357 INFO L82 PathProgramCache]: Analyzing trace with hash -253324305, now seen corresponding path program 9 times [2021-06-05 04:58:04,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:04,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395885183] [2021-06-05 04:58:04,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:04,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:04,408 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:04,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395885183] [2021-06-05 04:58:04,408 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395885183] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:04,408 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917967501] [2021-06-05 04:58:04,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:04,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 04:58:04,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:04,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:58:04,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:04,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:04,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917967501] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:04,497 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:04,497 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-06-05 04:58:04,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139203763] [2021-06-05 04:58:04,497 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 04:58:04,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:04,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 04:58:04,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:58:04,497 INFO L87 Difference]: Start difference. First operand 307 states and 928 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:04,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:04,849 INFO L93 Difference]: Finished difference Result 718 states and 2053 transitions. [2021-06-05 04:58:04,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 04:58:04,849 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:04,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:04,850 INFO L225 Difference]: With dead ends: 718 [2021-06-05 04:58:04,851 INFO L226 Difference]: Without dead ends: 592 [2021-06-05 04:58:04,851 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 242.6ms TimeCoverageRelationStatistics Valid=129, Invalid=333, Unknown=0, NotChecked=0, Total=462 [2021-06-05 04:58:04,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-06-05 04:58:04,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 310. [2021-06-05 04:58:04,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 3.0226537216828477) internal successors, (934), 309 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:04,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 934 transitions. [2021-06-05 04:58:04,857 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 934 transitions. Word has length 18 [2021-06-05 04:58:04,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:04,858 INFO L482 AbstractCegarLoop]: Abstraction has 310 states and 934 transitions. [2021-06-05 04:58:04,858 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:04,858 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 934 transitions. [2021-06-05 04:58:04,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:04,858 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:04,858 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:05,072 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:05,073 INFO L430 AbstractCegarLoop]: === Iteration 140 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:05,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:05,073 INFO L82 PathProgramCache]: Analyzing trace with hash -603750765, now seen corresponding path program 10 times [2021-06-05 04:58:05,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:05,073 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824136803] [2021-06-05 04:58:05,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:05,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:05,150 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:05,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824136803] [2021-06-05 04:58:05,150 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824136803] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:05,150 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061860415] [2021-06-05 04:58:05,150 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:05,184 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 04:58:05,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:05,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 04:58:05,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:05,278 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061860415] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:05,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:05,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-06-05 04:58:05,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820837086] [2021-06-05 04:58:05,279 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-05 04:58:05,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:05,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-05 04:58:05,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-06-05 04:58:05,279 INFO L87 Difference]: Start difference. First operand 310 states and 934 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:05,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:05,493 INFO L93 Difference]: Finished difference Result 549 states and 1571 transitions. [2021-06-05 04:58:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:58:05,493 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:05,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:05,494 INFO L225 Difference]: With dead ends: 549 [2021-06-05 04:58:05,495 INFO L226 Difference]: Without dead ends: 512 [2021-06-05 04:58:05,495 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 225.1ms TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-06-05 04:58:05,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-06-05 04:58:05,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 310. [2021-06-05 04:58:05,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 3.0194174757281553) internal successors, (933), 309 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:05,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 933 transitions. [2021-06-05 04:58:05,501 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 933 transitions. Word has length 18 [2021-06-05 04:58:05,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:05,501 INFO L482 AbstractCegarLoop]: Abstraction has 310 states and 933 transitions. [2021-06-05 04:58:05,501 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:05,501 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 933 transitions. [2021-06-05 04:58:05,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:05,501 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:05,502 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:05,720 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2021-06-05 04:58:05,721 INFO L430 AbstractCegarLoop]: === Iteration 141 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:05,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:05,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1496627073, now seen corresponding path program 11 times [2021-06-05 04:58:05,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:05,721 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433342071] [2021-06-05 04:58:05,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:05,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:05,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433342071] [2021-06-05 04:58:05,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433342071] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:05,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845619819] [2021-06-05 04:58:05,776 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:05,822 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:58:05,822 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:05,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 04:58:05,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:05,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:05,916 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845619819] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:05,916 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:05,916 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 04:58:05,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815142321] [2021-06-05 04:58:05,916 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 04:58:05,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:05,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 04:58:05,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:58:05,916 INFO L87 Difference]: Start difference. First operand 310 states and 933 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:06,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:06,083 INFO L93 Difference]: Finished difference Result 552 states and 1552 transitions. [2021-06-05 04:58:06,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:58:06,084 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:06,085 INFO L225 Difference]: With dead ends: 552 [2021-06-05 04:58:06,085 INFO L226 Difference]: Without dead ends: 521 [2021-06-05 04:58:06,085 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 132.8ms TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-06-05 04:58:06,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-06-05 04:58:06,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 313. [2021-06-05 04:58:06,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 3.0288461538461537) internal successors, (945), 312 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:06,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 945 transitions. [2021-06-05 04:58:06,091 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 945 transitions. Word has length 18 [2021-06-05 04:58:06,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:06,091 INFO L482 AbstractCegarLoop]: Abstraction has 313 states and 945 transitions. [2021-06-05 04:58:06,091 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:06,092 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 945 transitions. [2021-06-05 04:58:06,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:06,092 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:06,092 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:06,316 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:06,316 INFO L430 AbstractCegarLoop]: === Iteration 142 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:06,316 INFO L82 PathProgramCache]: Analyzing trace with hash 1579704863, now seen corresponding path program 12 times [2021-06-05 04:58:06,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:06,316 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48364779] [2021-06-05 04:58:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:06,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:06,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48364779] [2021-06-05 04:58:06,340 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48364779] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:06,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1729038888] [2021-06-05 04:58:06,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:06,391 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 04:58:06,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:06,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:58:06,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:06,444 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:06,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1729038888] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:06,445 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:06,445 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-05 04:58:06,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908785251] [2021-06-05 04:58:06,445 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 04:58:06,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:06,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 04:58:06,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 04:58:06,445 INFO L87 Difference]: Start difference. First operand 313 states and 945 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:06,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:06,493 INFO L93 Difference]: Finished difference Result 451 states and 1311 transitions. [2021-06-05 04:58:06,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:58:06,493 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:06,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:06,494 INFO L225 Difference]: With dead ends: 451 [2021-06-05 04:58:06,494 INFO L226 Difference]: Without dead ends: 402 [2021-06-05 04:58:06,494 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 46.0ms TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-06-05 04:58:06,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-06-05 04:58:06,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 275. [2021-06-05 04:58:06,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 2.9708029197080292) internal successors, (814), 274 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:06,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 814 transitions. [2021-06-05 04:58:06,497 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 814 transitions. Word has length 18 [2021-06-05 04:58:06,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:06,497 INFO L482 AbstractCegarLoop]: Abstraction has 275 states and 814 transitions. [2021-06-05 04:58:06,497 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:06,497 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 814 transitions. [2021-06-05 04:58:06,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:06,498 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:06,498 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:06,699 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable194 [2021-06-05 04:58:06,699 INFO L430 AbstractCegarLoop]: === Iteration 143 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:06,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:06,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1646468570, now seen corresponding path program 4 times [2021-06-05 04:58:06,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:06,700 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100391837] [2021-06-05 04:58:06,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:06,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:06,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:06,746 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:06,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100391837] [2021-06-05 04:58:06,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100391837] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:06,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409784521] [2021-06-05 04:58:06,747 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:06,781 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 04:58:06,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:06,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:58:06,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:06,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409784521] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:06,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:06,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-06-05 04:58:06,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714688070] [2021-06-05 04:58:06,840 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:06,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:06,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:06,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:06,840 INFO L87 Difference]: Start difference. First operand 275 states and 814 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:06,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:06,950 INFO L93 Difference]: Finished difference Result 382 states and 1100 transitions. [2021-06-05 04:58:06,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:58:06,950 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:06,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:06,951 INFO L225 Difference]: With dead ends: 382 [2021-06-05 04:58:06,951 INFO L226 Difference]: Without dead ends: 321 [2021-06-05 04:58:06,951 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 101.6ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:58:06,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-06-05 04:58:06,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 285. [2021-06-05 04:58:06,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.943661971830986) internal successors, (836), 284 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:06,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 836 transitions. [2021-06-05 04:58:06,955 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 836 transitions. Word has length 18 [2021-06-05 04:58:06,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:06,956 INFO L482 AbstractCegarLoop]: Abstraction has 285 states and 836 transitions. [2021-06-05 04:58:06,956 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:06,956 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 836 transitions. [2021-06-05 04:58:06,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:06,956 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:06,956 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:07,179 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:07,179 INFO L430 AbstractCegarLoop]: === Iteration 144 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:07,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:07,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1039285976, now seen corresponding path program 5 times [2021-06-05 04:58:07,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:07,180 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381812462] [2021-06-05 04:58:07,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:07,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:07,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381812462] [2021-06-05 04:58:07,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381812462] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:07,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261068975] [2021-06-05 04:58:07,227 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:07,265 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:58:07,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:07,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:58:07,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:07,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:07,322 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261068975] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:07,322 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:07,322 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-06-05 04:58:07,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517413259] [2021-06-05 04:58:07,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:07,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:07,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:07,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:07,322 INFO L87 Difference]: Start difference. First operand 285 states and 836 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:07,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:07,399 INFO L93 Difference]: Finished difference Result 392 states and 1114 transitions. [2021-06-05 04:58:07,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:58:07,399 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:07,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:07,400 INFO L225 Difference]: With dead ends: 392 [2021-06-05 04:58:07,400 INFO L226 Difference]: Without dead ends: 337 [2021-06-05 04:58:07,400 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 66.2ms TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:58:07,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-06-05 04:58:07,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 274. [2021-06-05 04:58:07,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 2.93040293040293) internal successors, (800), 273 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:07,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 800 transitions. [2021-06-05 04:58:07,405 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 800 transitions. Word has length 18 [2021-06-05 04:58:07,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:07,405 INFO L482 AbstractCegarLoop]: Abstraction has 274 states and 800 transitions. [2021-06-05 04:58:07,405 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:07,405 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 800 transitions. [2021-06-05 04:58:07,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:07,405 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:07,405 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:07,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:07,621 INFO L430 AbstractCegarLoop]: === Iteration 145 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:07,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:07,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1633409787, now seen corresponding path program 6 times [2021-06-05 04:58:07,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:07,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029745357] [2021-06-05 04:58:07,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:07,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:07,667 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:07,667 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029745357] [2021-06-05 04:58:07,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029745357] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:07,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127196789] [2021-06-05 04:58:07,668 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:07,693 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 04:58:07,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:07,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:58:07,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:07,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:07,790 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127196789] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:07,790 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:07,790 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-06-05 04:58:07,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120310686] [2021-06-05 04:58:07,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 04:58:07,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:07,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 04:58:07,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:58:07,791 INFO L87 Difference]: Start difference. First operand 274 states and 800 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:08,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:08,152 INFO L93 Difference]: Finished difference Result 519 states and 1396 transitions. [2021-06-05 04:58:08,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 04:58:08,153 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:08,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:08,154 INFO L225 Difference]: With dead ends: 519 [2021-06-05 04:58:08,154 INFO L226 Difference]: Without dead ends: 431 [2021-06-05 04:58:08,154 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 315.8ms TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2021-06-05 04:58:08,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-06-05 04:58:08,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 279. [2021-06-05 04:58:08,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 2.91726618705036) internal successors, (811), 278 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:08,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 811 transitions. [2021-06-05 04:58:08,160 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 811 transitions. Word has length 18 [2021-06-05 04:58:08,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:08,160 INFO L482 AbstractCegarLoop]: Abstraction has 279 states and 811 transitions. [2021-06-05 04:58:08,160 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:08,160 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 811 transitions. [2021-06-05 04:58:08,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:08,160 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:08,161 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:08,382 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2021-06-05 04:58:08,383 INFO L430 AbstractCegarLoop]: === Iteration 146 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:08,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:08,383 INFO L82 PathProgramCache]: Analyzing trace with hash -675858551, now seen corresponding path program 7 times [2021-06-05 04:58:08,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:08,383 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868711237] [2021-06-05 04:58:08,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:08,440 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:08,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868711237] [2021-06-05 04:58:08,440 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868711237] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:08,440 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709260355] [2021-06-05 04:58:08,440 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:08,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 04:58:08,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:08,560 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709260355] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:08,560 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:08,560 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-06-05 04:58:08,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489474081] [2021-06-05 04:58:08,560 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-06-05 04:58:08,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:08,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-06-05 04:58:08,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-06-05 04:58:08,561 INFO L87 Difference]: Start difference. First operand 279 states and 811 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:08,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:08,748 INFO L93 Difference]: Finished difference Result 371 states and 1004 transitions. [2021-06-05 04:58:08,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 04:58:08,749 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:08,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:08,749 INFO L225 Difference]: With dead ends: 371 [2021-06-05 04:58:08,749 INFO L226 Difference]: Without dead ends: 348 [2021-06-05 04:58:08,750 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 220.9ms TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-06-05 04:58:08,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2021-06-05 04:58:08,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 285. [2021-06-05 04:58:08,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.9014084507042255) internal successors, (824), 284 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:08,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 824 transitions. [2021-06-05 04:58:08,753 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 824 transitions. Word has length 18 [2021-06-05 04:58:08,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:08,753 INFO L482 AbstractCegarLoop]: Abstraction has 285 states and 824 transitions. [2021-06-05 04:58:08,753 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:08,753 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 824 transitions. [2021-06-05 04:58:08,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:08,753 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:08,753 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:08,954 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:08,954 INFO L430 AbstractCegarLoop]: === Iteration 147 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:08,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:08,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1891218171, now seen corresponding path program 8 times [2021-06-05 04:58:08,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:08,954 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637559710] [2021-06-05 04:58:08,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:08,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:09,013 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:09,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637559710] [2021-06-05 04:58:09,013 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637559710] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:09,013 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982957351] [2021-06-05 04:58:09,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:09,039 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:58:09,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:09,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:58:09,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:09,099 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982957351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:09,100 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:09,100 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-06-05 04:58:09,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210997995] [2021-06-05 04:58:09,100 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-05 04:58:09,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:09,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-05 04:58:09,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-06-05 04:58:09,100 INFO L87 Difference]: Start difference. First operand 285 states and 824 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:09,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:09,448 INFO L93 Difference]: Finished difference Result 545 states and 1462 transitions. [2021-06-05 04:58:09,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 04:58:09,448 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:09,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:09,448 INFO L225 Difference]: With dead ends: 545 [2021-06-05 04:58:09,448 INFO L226 Difference]: Without dead ends: 433 [2021-06-05 04:58:09,449 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 262.0ms TimeCoverageRelationStatistics Valid=133, Invalid=373, Unknown=0, NotChecked=0, Total=506 [2021-06-05 04:58:09,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-06-05 04:58:09,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 264. [2021-06-05 04:58:09,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 2.9277566539923954) internal successors, (770), 263 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:09,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 770 transitions. [2021-06-05 04:58:09,452 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 770 transitions. Word has length 18 [2021-06-05 04:58:09,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:09,452 INFO L482 AbstractCegarLoop]: Abstraction has 264 states and 770 transitions. [2021-06-05 04:58:09,452 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:09,452 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 770 transitions. [2021-06-05 04:58:09,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:09,453 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:09,453 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:09,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable213 [2021-06-05 04:58:09,653 INFO L430 AbstractCegarLoop]: === Iteration 148 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:09,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:09,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1770591994, now seen corresponding path program 6 times [2021-06-05 04:58:09,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:09,654 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295559633] [2021-06-05 04:58:09,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:09,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:09,685 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:09,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295559633] [2021-06-05 04:58:09,685 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295559633] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:09,685 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043521115] [2021-06-05 04:58:09,685 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:09,714 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 04:58:09,714 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:09,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2021-06-05 04:58:09,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:09,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:09,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2043521115] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:09,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:09,789 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2021-06-05 04:58:09,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121377228] [2021-06-05 04:58:09,789 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-06-05 04:58:09,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:09,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-06-05 04:58:09,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:58:09,789 INFO L87 Difference]: Start difference. First operand 264 states and 770 transitions. Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:09,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:09,910 INFO L93 Difference]: Finished difference Result 379 states and 1054 transitions. [2021-06-05 04:58:09,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-05 04:58:09,910 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:09,911 INFO L225 Difference]: With dead ends: 379 [2021-06-05 04:58:09,911 INFO L226 Difference]: Without dead ends: 285 [2021-06-05 04:58:09,911 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 117.6ms TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-06-05 04:58:09,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2021-06-05 04:58:09,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 208. [2021-06-05 04:58:09,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 2.9082125603864735) internal successors, (602), 207 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:09,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 602 transitions. [2021-06-05 04:58:09,913 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 602 transitions. Word has length 18 [2021-06-05 04:58:09,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:09,913 INFO L482 AbstractCegarLoop]: Abstraction has 208 states and 602 transitions. [2021-06-05 04:58:09,914 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:09,914 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 602 transitions. [2021-06-05 04:58:09,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-06-05 04:58:09,914 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:09,914 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:10,114 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2021-06-05 04:58:10,114 INFO L430 AbstractCegarLoop]: === Iteration 149 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:10,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:10,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1782534729, now seen corresponding path program 9 times [2021-06-05 04:58:10,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:10,115 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996876783] [2021-06-05 04:58:10,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:10,155 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:10,155 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996876783] [2021-06-05 04:58:10,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996876783] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:10,156 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344684004] [2021-06-05 04:58:10,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:10,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 04:58:10,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:10,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-05 04:58:10,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:10,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:10,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344684004] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:10,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:10,251 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-06-05 04:58:10,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220452594] [2021-06-05 04:58:10,251 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-05 04:58:10,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:10,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-05 04:58:10,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-06-05 04:58:10,251 INFO L87 Difference]: Start difference. First operand 208 states and 602 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:10,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:10,349 INFO L93 Difference]: Finished difference Result 262 states and 743 transitions. [2021-06-05 04:58:10,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-06-05 04:58:10,349 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-06-05 04:58:10,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:10,350 INFO L225 Difference]: With dead ends: 262 [2021-06-05 04:58:10,350 INFO L226 Difference]: Without dead ends: 215 [2021-06-05 04:58:10,350 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 98.6ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-06-05 04:58:10,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-06-05 04:58:10,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 189. [2021-06-05 04:58:10,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9202127659574466) internal successors, (549), 188 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:10,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 549 transitions. [2021-06-05 04:58:10,354 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 549 transitions. Word has length 18 [2021-06-05 04:58:10,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:10,354 INFO L482 AbstractCegarLoop]: Abstraction has 189 states and 549 transitions. [2021-06-05 04:58:10,354 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:10,354 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 549 transitions. [2021-06-05 04:58:10,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:58:10,354 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:10,355 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:10,560 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable221 [2021-06-05 04:58:10,561 INFO L430 AbstractCegarLoop]: === Iteration 150 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:10,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:10,561 INFO L82 PathProgramCache]: Analyzing trace with hash 92049292, now seen corresponding path program 1 times [2021-06-05 04:58:10,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:10,561 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507295439] [2021-06-05 04:58:10,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:10,814 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:10,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507295439] [2021-06-05 04:58:10,815 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507295439] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:10,815 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619401826] [2021-06-05 04:58:10,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:10,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 04:58:10,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:11,989 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:11,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:11,994 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:12,428 WARN L205 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 130 [2021-06-05 04:58:12,429 INFO L628 ElimStorePlain]: treesize reduction 268, result has 64.1 percent of original size [2021-06-05 04:58:12,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:12,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:12,438 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:12,614 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-06-05 04:58:12,614 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:12,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:12,620 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:12,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:12,637 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:12,644 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:12,645 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:12,829 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2021-06-05 04:58:12,829 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:12,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:12,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:12,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:12,839 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:12,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:12,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:58:12,847 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:13,009 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 04:58:13,009 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:13,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:13,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:13,024 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:13,198 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-06-05 04:58:13,198 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:13,204 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:13,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:13,205 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:13,369 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-05 04:58:13,369 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:13,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:13,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:13,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:58:13,376 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:13,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:13,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:13,387 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:13,520 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-05 04:58:13,520 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:13,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:13,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:13,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:13,541 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:13,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:13,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:58:13,547 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:13,691 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 04:58:13,691 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:13,718 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-06-05 04:58:13,719 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 16 variables, input treesize:753, output treesize:328 [2021-06-05 04:58:13,973 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 100 [2021-06-05 04:58:14,231 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 85 [2021-06-05 04:58:14,704 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_25, array_6, v_prenex_29, v_prenex_27], 1=[array_0, v_prenex_24, v_prenex_28, v_prenex_26]} [2021-06-05 04:58:14,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:14,713 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-06-05 04:58:14,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:14,722 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:14,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:58:14,730 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:14,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:14,738 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:14,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:58:14,748 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:14,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:58:14,756 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:15,015 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2021-06-05 04:58:15,016 INFO L628 ElimStorePlain]: treesize reduction 838, result has 16.7 percent of original size [2021-06-05 04:58:15,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:15,022 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:15,088 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:15,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:15,093 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:15,160 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:15,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:15,166 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:15,232 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:15,233 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 04:58:15,233 INFO L518 ElimStorePlain]: Eliminatee v_prenex_24 vanished before elimination [2021-06-05 04:58:15,233 INFO L518 ElimStorePlain]: Eliminatee v_prenex_28 vanished before elimination [2021-06-05 04:58:15,233 INFO L518 ElimStorePlain]: Eliminatee v_prenex_26 vanished before elimination [2021-06-05 04:58:15,236 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 04:58:15,236 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:1125, output treesize:122 [2021-06-05 04:58:15,379 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-06-05 04:58:15,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:15,487 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619401826] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:15,487 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:15,487 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 04:58:15,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097520320] [2021-06-05 04:58:15,487 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 04:58:15,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:15,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 04:58:15,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 04:58:15,488 INFO L87 Difference]: Start difference. First operand 189 states and 549 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:15,800 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2021-06-05 04:58:16,085 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 100 [2021-06-05 04:58:16,592 WARN L205 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 170 [2021-06-05 04:58:17,517 WARN L205 SmtUtils]: Spent 809.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 190 [2021-06-05 04:58:18,521 WARN L205 SmtUtils]: Spent 888.00 ms on a formula simplification. DAG size of input: 227 DAG size of output: 195 [2021-06-05 04:58:19,660 WARN L205 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 237 DAG size of output: 209 [2021-06-05 04:58:19,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:19,731 INFO L93 Difference]: Finished difference Result 420 states and 1167 transitions. [2021-06-05 04:58:19,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 04:58:19,732 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:58:19,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:19,732 INFO L225 Difference]: With dead ends: 420 [2021-06-05 04:58:19,732 INFO L226 Difference]: Without dead ends: 380 [2021-06-05 04:58:19,733 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 5051.4ms TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2021-06-05 04:58:19,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-06-05 04:58:19,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 209. [2021-06-05 04:58:19,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 2.894230769230769) internal successors, (602), 208 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:19,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 602 transitions. [2021-06-05 04:58:19,736 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 602 transitions. Word has length 20 [2021-06-05 04:58:19,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:19,737 INFO L482 AbstractCegarLoop]: Abstraction has 209 states and 602 transitions. [2021-06-05 04:58:19,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:19,737 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 602 transitions. [2021-06-05 04:58:19,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:58:19,737 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:19,737 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:19,948 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:19,949 INFO L430 AbstractCegarLoop]: === Iteration 151 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:19,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:19,949 INFO L82 PathProgramCache]: Analyzing trace with hash -304868362, now seen corresponding path program 2 times [2021-06-05 04:58:19,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:19,949 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460873395] [2021-06-05 04:58:19,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:19,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:20,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:20,178 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:20,178 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460873395] [2021-06-05 04:58:20,178 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460873395] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:20,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339543297] [2021-06-05 04:58:20,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:20,221 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:58:20,221 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:20,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 04:58:20,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:21,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:21,246 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:21,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:58:21,255 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:21,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:21,264 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:21,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:58:21,273 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:21,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:58:21,286 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:21,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:58:21,294 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:21,729 WARN L205 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2021-06-05 04:58:21,729 INFO L628 ElimStorePlain]: treesize reduction 583, result has 43.8 percent of original size [2021-06-05 04:58:21,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:21,738 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:21,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:58:21,746 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:21,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:21,751 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:21,909 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 04:58:21,910 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:21,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,915 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:21,917 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:21,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:21,925 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:21,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:21,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:21,932 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:22,102 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 04:58:22,103 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:22,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:22,108 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:22,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:22,109 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:22,113 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:22,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:22,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 04:58:22,115 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:22,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:22,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:58:22,121 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:22,388 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2021-06-05 04:58:22,389 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.7 percent of original size [2021-06-05 04:58:22,397 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-06-05 04:58:22,397 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:334 [2021-06-05 04:58:22,608 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 100 [2021-06-05 04:58:22,804 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-05 04:58:23,187 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_50, v_prenex_54, v_prenex_52, v_prenex_58, array_6, v_prenex_56, v_prenex_48], 1=[array_0, v_prenex_53, v_prenex_51, v_prenex_47, v_prenex_57, v_prenex_55, v_prenex_49]} [2021-06-05 04:58:23,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:58:23,208 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:23,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:58:23,219 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:23,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:23,229 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:23,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:58:23,244 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:23,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:23,254 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:23,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:58:23,267 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:23,755 WARN L205 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 106 [2021-06-05 04:58:23,755 INFO L628 ElimStorePlain]: treesize reduction 1619, result has 16.2 percent of original size [2021-06-05 04:58:23,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:23,763 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:23,891 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 04:58:23,891 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:23,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:23,898 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:24,042 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 04:58:24,042 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:24,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:24,049 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:24,167 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-05 04:58:24,167 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:24,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:24,173 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:24,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:58:24,178 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:24,370 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2021-06-05 04:58:24,370 INFO L628 ElimStorePlain]: treesize reduction 33, result has 87.7 percent of original size [2021-06-05 04:58:24,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 04:58:24,376 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:24,476 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 04:58:24,477 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:24,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:24,482 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:24,571 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:24,571 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 04:58:24,571 INFO L518 ElimStorePlain]: Eliminatee v_prenex_53 vanished before elimination [2021-06-05 04:58:24,571 INFO L518 ElimStorePlain]: Eliminatee v_prenex_51 vanished before elimination [2021-06-05 04:58:24,571 INFO L518 ElimStorePlain]: Eliminatee v_prenex_47 vanished before elimination [2021-06-05 04:58:24,571 INFO L518 ElimStorePlain]: Eliminatee v_prenex_57 vanished before elimination [2021-06-05 04:58:24,571 INFO L518 ElimStorePlain]: Eliminatee v_prenex_55 vanished before elimination [2021-06-05 04:58:24,571 INFO L518 ElimStorePlain]: Eliminatee v_prenex_49 vanished before elimination [2021-06-05 04:58:24,577 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 14 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 04:58:24,578 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 21 variables, input treesize:2043, output treesize:175 [2021-06-05 04:58:24,761 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-06-05 04:58:24,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:24,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339543297] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:24,986 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:24,986 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 04:58:24,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956898390] [2021-06-05 04:58:24,987 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 04:58:24,987 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:24,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 04:58:24,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 04:58:24,987 INFO L87 Difference]: Start difference. First operand 209 states and 602 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:25,358 WARN L205 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2021-06-05 04:58:25,633 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 98 [2021-06-05 04:58:26,356 WARN L205 SmtUtils]: Spent 602.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 160 [2021-06-05 04:58:26,722 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 106 [2021-06-05 04:58:27,497 WARN L205 SmtUtils]: Spent 715.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 167 [2021-06-05 04:58:27,894 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 121 [2021-06-05 04:58:28,696 WARN L205 SmtUtils]: Spent 739.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 181 [2021-06-05 04:58:29,118 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 117 [2021-06-05 04:58:29,967 WARN L205 SmtUtils]: Spent 761.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 184 [2021-06-05 04:58:30,747 WARN L205 SmtUtils]: Spent 714.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 174 [2021-06-05 04:58:31,609 WARN L205 SmtUtils]: Spent 802.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 189 [2021-06-05 04:58:32,020 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 120 [2021-06-05 04:58:32,913 WARN L205 SmtUtils]: Spent 814.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 191 [2021-06-05 04:58:33,792 WARN L205 SmtUtils]: Spent 793.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 181 [2021-06-05 04:58:33,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:33,860 INFO L93 Difference]: Finished difference Result 598 states and 1609 transitions. [2021-06-05 04:58:33,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 04:58:33,860 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:58:33,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:33,861 INFO L225 Difference]: With dead ends: 598 [2021-06-05 04:58:33,861 INFO L226 Difference]: Without dead ends: 526 [2021-06-05 04:58:33,861 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 9460.4ms TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 04:58:33,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 526 states. [2021-06-05 04:58:33,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 526 to 244. [2021-06-05 04:58:33,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 2.9012345679012346) internal successors, (705), 243 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:33,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 705 transitions. [2021-06-05 04:58:33,865 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 705 transitions. Word has length 20 [2021-06-05 04:58:33,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:33,865 INFO L482 AbstractCegarLoop]: Abstraction has 244 states and 705 transitions. [2021-06-05 04:58:33,865 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:33,865 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 705 transitions. [2021-06-05 04:58:33,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:58:33,866 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:33,866 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:34,066 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:34,067 INFO L430 AbstractCegarLoop]: === Iteration 152 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:34,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:34,067 INFO L82 PathProgramCache]: Analyzing trace with hash -225291252, now seen corresponding path program 3 times [2021-06-05 04:58:34,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:34,067 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236766241] [2021-06-05 04:58:34,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:34,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:34,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:34,221 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:34,221 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236766241] [2021-06-05 04:58:34,222 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236766241] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:34,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978529998] [2021-06-05 04:58:34,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:34,252 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 04:58:34,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:34,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 04:58:34,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:35,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:35,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:35,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:58:35,066 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:35,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:35,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:35,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:35,075 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:35,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:35,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:35,083 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:35,398 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 101 [2021-06-05 04:58:35,398 INFO L628 ElimStorePlain]: treesize reduction 167, result has 69.5 percent of original size [2021-06-05 04:58:35,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:35,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:35,407 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:35,550 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-05 04:58:35,550 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:35,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:35,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:35,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:35,557 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:35,562 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:35,562 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:35,678 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-05 04:58:35,678 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:35,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:35,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:35,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:35,685 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:35,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:35,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 04:58:35,690 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:35,796 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 04:58:35,796 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:35,801 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:35,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:35,802 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:35,900 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:35,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:35,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:35,905 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:36,001 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:36,011 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 04:58:36,012 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:577, output treesize:243 [2021-06-05 04:58:36,204 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2021-06-05 04:58:36,547 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 84 [2021-06-05 04:58:36,824 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_82, v_prenex_86, v_prenex_84, array_6, v_prenex_88, v_prenex_90], 1=[v_prenex_83, v_prenex_81, v_prenex_87, array_3, v_prenex_85, v_prenex_89]} [2021-06-05 04:58:36,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:58:36,835 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:36,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:58:36,846 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:36,855 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:36,856 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:36,865 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:36,866 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:36,875 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:36,876 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:36,884 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:36,885 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:37,182 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 81 [2021-06-05 04:58:37,183 INFO L628 ElimStorePlain]: treesize reduction 1150, result has 13.4 percent of original size [2021-06-05 04:58:37,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:37,188 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:37,251 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:37,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:37,256 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:37,318 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:37,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:37,325 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:37,385 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:37,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:37,390 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:37,447 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:37,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:37,452 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:37,516 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:37,516 INFO L518 ElimStorePlain]: Eliminatee v_prenex_83 vanished before elimination [2021-06-05 04:58:37,516 INFO L518 ElimStorePlain]: Eliminatee v_prenex_81 vanished before elimination [2021-06-05 04:58:37,516 INFO L518 ElimStorePlain]: Eliminatee v_prenex_87 vanished before elimination [2021-06-05 04:58:37,516 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 04:58:37,516 INFO L518 ElimStorePlain]: Eliminatee v_prenex_85 vanished before elimination [2021-06-05 04:58:37,517 INFO L518 ElimStorePlain]: Eliminatee v_prenex_89 vanished before elimination [2021-06-05 04:58:37,519 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 04:58:37,519 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 18 variables, input treesize:1537, output treesize:107 [2021-06-05 04:58:37,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:37,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978529998] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:37,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:37,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 04:58:37,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891431719] [2021-06-05 04:58:37,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 04:58:37,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:37,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 04:58:37,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 04:58:37,682 INFO L87 Difference]: Start difference. First operand 244 states and 705 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:38,108 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2021-06-05 04:58:38,364 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2021-06-05 04:58:38,799 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 143 [2021-06-05 04:58:39,357 WARN L205 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 159 [2021-06-05 04:58:39,632 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2021-06-05 04:58:39,894 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 98 [2021-06-05 04:58:40,118 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2021-06-05 04:58:40,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:40,137 INFO L93 Difference]: Finished difference Result 426 states and 1192 transitions. [2021-06-05 04:58:40,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 04:58:40,137 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:58:40,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:40,138 INFO L225 Difference]: With dead ends: 426 [2021-06-05 04:58:40,138 INFO L226 Difference]: Without dead ends: 378 [2021-06-05 04:58:40,138 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2996.9ms TimeCoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2021-06-05 04:58:40,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-06-05 04:58:40,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 250. [2021-06-05 04:58:40,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 2.895582329317269) internal successors, (721), 249 states have internal predecessors, (721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:40,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 721 transitions. [2021-06-05 04:58:40,141 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 721 transitions. Word has length 20 [2021-06-05 04:58:40,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:40,141 INFO L482 AbstractCegarLoop]: Abstraction has 250 states and 721 transitions. [2021-06-05 04:58:40,141 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:40,141 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 721 transitions. [2021-06-05 04:58:40,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:58:40,141 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:40,141 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:40,342 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable596,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:40,342 INFO L430 AbstractCegarLoop]: === Iteration 153 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:40,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:40,342 INFO L82 PathProgramCache]: Analyzing trace with hash 253993424, now seen corresponding path program 4 times [2021-06-05 04:58:40,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:40,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248887543] [2021-06-05 04:58:40,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:40,489 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:40,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248887543] [2021-06-05 04:58:40,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248887543] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:40,489 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105287473] [2021-06-05 04:58:40,490 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:40,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 04:58:40,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:40,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 04:58:40,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:41,430 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:41,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:41,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:58:41,432 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:41,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:41,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:41,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:58:41,441 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:41,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:41,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:41,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:41,449 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:41,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:41,457 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:41,457 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:58:41,458 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:41,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:41,470 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:41,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:41,471 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:41,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:41,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:58:41,480 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:41,959 WARN L205 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2021-06-05 04:58:41,960 INFO L628 ElimStorePlain]: treesize reduction 602, result has 44.9 percent of original size [2021-06-05 04:58:41,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:41,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:41,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:41,967 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:41,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:41,976 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:41,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:41,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:41,984 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:42,344 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2021-06-05 04:58:42,346 INFO L628 ElimStorePlain]: treesize reduction 27, result has 94.2 percent of original size [2021-06-05 04:58:42,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:42,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:42,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:42,353 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:42,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:42,359 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:42,375 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:42,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:58:42,377 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:42,557 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 04:58:42,558 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:42,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:58:42,563 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:42,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:42,569 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:42,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:42,570 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:42,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:42,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:42,578 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:42,870 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2021-06-05 04:58:42,871 INFO L628 ElimStorePlain]: treesize reduction 34, result has 91.0 percent of original size [2021-06-05 04:58:42,882 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-06-05 04:58:42,882 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:321 [2021-06-05 04:58:43,136 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2021-06-05 04:58:43,385 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_108, v_prenex_110, array_6, v_prenex_104, v_prenex_106], 1=[v_prenex_107, v_prenex_109, array_3, v_prenex_103, v_prenex_105]} [2021-06-05 04:58:43,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:58:43,396 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:43,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:58:43,409 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:43,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 04:58:43,423 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:43,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 04:58:43,434 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:43,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 04:58:43,446 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:43,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:58:43,457 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:43,878 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 88 [2021-06-05 04:58:43,878 INFO L628 ElimStorePlain]: treesize reduction 1253, result has 20.7 percent of original size [2021-06-05 04:58:43,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:43,884 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:44,017 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 04:58:44,017 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:44,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:44,023 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:44,153 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 04:58:44,153 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:44,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:44,159 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:44,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:58:44,165 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:44,403 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2021-06-05 04:58:44,403 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.3 percent of original size [2021-06-05 04:58:44,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:44,408 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:44,529 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-05 04:58:44,529 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:44,530 INFO L518 ElimStorePlain]: Eliminatee v_prenex_107 vanished before elimination [2021-06-05 04:58:44,530 INFO L518 ElimStorePlain]: Eliminatee v_prenex_109 vanished before elimination [2021-06-05 04:58:44,530 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 04:58:44,530 INFO L518 ElimStorePlain]: Eliminatee v_prenex_103 vanished before elimination [2021-06-05 04:58:44,530 INFO L518 ElimStorePlain]: Eliminatee v_prenex_105 vanished before elimination [2021-06-05 04:58:44,534 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 12 xjuncts. [2021-06-05 04:58:44,534 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 15 variables, input treesize:1771, output treesize:238 [2021-06-05 04:58:44,693 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2021-06-05 04:58:44,875 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-06-05 04:58:44,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:44,970 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105287473] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:44,970 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:44,970 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 04:58:44,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683775042] [2021-06-05 04:58:44,970 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 04:58:44,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:44,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 04:58:44,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 04:58:44,971 INFO L87 Difference]: Start difference. First operand 250 states and 721 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:45,233 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2021-06-05 04:58:45,493 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2021-06-05 04:58:45,793 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 95 [2021-06-05 04:58:46,415 WARN L205 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 138 [2021-06-05 04:58:46,867 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 133 [2021-06-05 04:58:47,319 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 108 [2021-06-05 04:58:47,670 WARN L205 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2021-06-05 04:58:48,159 WARN L205 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 111 [2021-06-05 04:58:48,687 WARN L205 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 115 [2021-06-05 04:58:49,043 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 109 [2021-06-05 04:58:49,599 WARN L205 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 118 [2021-06-05 04:58:49,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:49,650 INFO L93 Difference]: Finished difference Result 490 states and 1346 transitions. [2021-06-05 04:58:49,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 04:58:49,651 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:58:49,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:49,651 INFO L225 Difference]: With dead ends: 490 [2021-06-05 04:58:49,651 INFO L226 Difference]: Without dead ends: 460 [2021-06-05 04:58:49,651 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 5326.3ms TimeCoverageRelationStatistics Valid=182, Invalid=748, Unknown=0, NotChecked=0, Total=930 [2021-06-05 04:58:49,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-06-05 04:58:49,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 259. [2021-06-05 04:58:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 2.887596899224806) internal successors, (745), 258 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:49,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 745 transitions. [2021-06-05 04:58:49,655 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 745 transitions. Word has length 20 [2021-06-05 04:58:49,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:49,655 INFO L482 AbstractCegarLoop]: Abstraction has 259 states and 745 transitions. [2021-06-05 04:58:49,655 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:49,655 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 745 transitions. [2021-06-05 04:58:49,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:58:49,655 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:49,656 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:49,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable739,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:49,856 INFO L430 AbstractCegarLoop]: === Iteration 154 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:49,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:49,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1444726964, now seen corresponding path program 5 times [2021-06-05 04:58:49,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:49,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691347606] [2021-06-05 04:58:49,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:50,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:50,075 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:50,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691347606] [2021-06-05 04:58:50,075 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691347606] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:50,075 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018582262] [2021-06-05 04:58:50,075 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:50,109 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 04:58:50,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:50,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 04:58:50,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:50,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 04:58:50,343 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,348 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:50,348 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:58:50,353 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:58:50,358 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 04:58:50,363 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:58:50,368 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:58:50,373 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:58:50,377 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:58:50,380 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:58:50,385 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:58:50,389 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:50,393 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 04:58:50,398 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:58:50,401 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:58:50,405 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:58:50,409 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:58:50,413 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:50,417 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:50,545 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 41 [2021-06-05 04:58:50,545 INFO L628 ElimStorePlain]: treesize reduction 99, result has 63.7 percent of original size [2021-06-05 04:58:50,547 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 04:58:50,547 INFO L247 ElimStorePlain]: Needed 19 recursive calls to eliminate 1 variables, input treesize:799, output treesize:174 [2021-06-05 04:58:50,908 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-06-05 04:58:51,055 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:51,055 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018582262] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:51,055 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:51,055 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 04:58:51,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407463527] [2021-06-05 04:58:51,056 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 04:58:51,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:51,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 04:58:51,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-06-05 04:58:51,056 INFO L87 Difference]: Start difference. First operand 259 states and 745 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:51,890 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2021-06-05 04:58:52,058 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 62 [2021-06-05 04:58:52,295 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 73 [2021-06-05 04:58:52,443 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 57 [2021-06-05 04:58:52,705 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 79 [2021-06-05 04:58:52,967 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2021-06-05 04:58:53,181 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 62 [2021-06-05 04:58:53,335 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2021-06-05 04:58:53,730 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2021-06-05 04:58:53,974 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2021-06-05 04:58:54,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:58:54,007 INFO L93 Difference]: Finished difference Result 503 states and 1384 transitions. [2021-06-05 04:58:54,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 04:58:54,008 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:58:54,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:58:54,008 INFO L225 Difference]: With dead ends: 503 [2021-06-05 04:58:54,008 INFO L226 Difference]: Without dead ends: 444 [2021-06-05 04:58:54,008 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 3301.2ms TimeCoverageRelationStatistics Valid=214, Invalid=908, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 04:58:54,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-06-05 04:58:54,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 265. [2021-06-05 04:58:54,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 2.9166666666666665) internal successors, (770), 264 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:54,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 770 transitions. [2021-06-05 04:58:54,013 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 770 transitions. Word has length 20 [2021-06-05 04:58:54,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:58:54,013 INFO L482 AbstractCegarLoop]: Abstraction has 265 states and 770 transitions. [2021-06-05 04:58:54,013 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:54,013 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 770 transitions. [2021-06-05 04:58:54,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:58:54,013 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:58:54,014 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:58:54,228 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable878 [2021-06-05 04:58:54,229 INFO L430 AbstractCegarLoop]: === Iteration 155 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:58:54,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:58:54,229 INFO L82 PathProgramCache]: Analyzing trace with hash 789223226, now seen corresponding path program 6 times [2021-06-05 04:58:54,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:58:54,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704171669] [2021-06-05 04:58:54,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:58:54,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:58:54,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:54,403 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:58:54,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704171669] [2021-06-05 04:58:54,403 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704171669] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:54,403 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791878110] [2021-06-05 04:58:54,403 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:58:54,432 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 04:58:54,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:58:54,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 04:58:54,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:58:55,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:55,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:55,051 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:55,531 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 131 [2021-06-05 04:58:55,531 INFO L628 ElimStorePlain]: treesize reduction 237, result has 68.2 percent of original size [2021-06-05 04:58:55,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:55,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:55,539 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:55,733 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-06-05 04:58:55,733 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:55,740 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:55,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:55,741 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:55,935 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-05 04:58:55,935 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:55,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:55,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:55,942 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,135 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2021-06-05 04:58:56,135 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:56,141 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:56,142 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:56,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:58:56,143 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,149 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:56,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:56,151 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,336 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2021-06-05 04:58:56,337 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:56,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:56,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:56,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 04:58:56,344 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,348 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:56,349 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,498 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-05 04:58:56,498 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:56,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:56,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:56,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:56,507 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:56,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:56,515 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,659 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 04:58:56,659 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:56,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:56,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:56,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:58:56,667 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:58:56,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:58:56,673 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:56,813 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 04:58:56,813 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:56,821 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-06-05 04:58:56,822 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 16 variables, input treesize:753, output treesize:343 [2021-06-05 04:58:57,036 WARN L205 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 101 [2021-06-05 04:58:57,655 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_140, v_prenex_142, v_prenex_144, array_6, v_prenex_134, v_prenex_136, v_prenex_138], 1=[array_0, v_prenex_141, v_prenex_143, v_prenex_133, v_prenex_135, v_prenex_137, v_prenex_139]} [2021-06-05 04:58:57,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:58:57,668 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:57,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:58:57,681 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:57,692 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:57,693 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:57,705 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:57,705 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:57,714 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:57,715 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:57,723 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:58:57,723 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,159 WARN L205 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 104 [2021-06-05 04:58:58,159 INFO L628 ElimStorePlain]: treesize reduction 1590, result has 14.9 percent of original size [2021-06-05 04:58:58,165 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:58:58,166 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,270 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-05 04:58:58,270 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:58,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:58,277 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,379 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-06-05 04:58:58,379 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:58,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:58,386 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,486 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-05 04:58:58,486 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:58,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:58:58,493 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,588 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:58,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:58:58,594 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,693 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:58,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 04:58:58,698 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:58:58,789 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:58:58,790 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 04:58:58,790 INFO L518 ElimStorePlain]: Eliminatee v_prenex_141 vanished before elimination [2021-06-05 04:58:58,790 INFO L518 ElimStorePlain]: Eliminatee v_prenex_143 vanished before elimination [2021-06-05 04:58:58,790 INFO L518 ElimStorePlain]: Eliminatee v_prenex_133 vanished before elimination [2021-06-05 04:58:58,790 INFO L518 ElimStorePlain]: Eliminatee v_prenex_135 vanished before elimination [2021-06-05 04:58:58,790 INFO L518 ElimStorePlain]: Eliminatee v_prenex_137 vanished before elimination [2021-06-05 04:58:58,790 INFO L518 ElimStorePlain]: Eliminatee v_prenex_139 vanished before elimination [2021-06-05 04:58:58,793 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 14 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 04:58:58,793 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 21 variables, input treesize:2085, output treesize:175 [2021-06-05 04:58:58,952 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-06-05 04:58:59,108 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-06-05 04:58:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:58:59,194 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791878110] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:58:59,194 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:58:59,194 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 04:58:59,194 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884856289] [2021-06-05 04:58:59,195 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 04:58:59,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:58:59,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 04:58:59,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 04:58:59,195 INFO L87 Difference]: Start difference. First operand 265 states and 770 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:58:59,479 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 83 [2021-06-05 04:58:59,751 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 89 [2021-06-05 04:59:00,059 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 94 [2021-06-05 04:59:00,584 WARN L205 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 162 [2021-06-05 04:59:01,078 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 120 [2021-06-05 04:59:01,317 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 102 [2021-06-05 04:59:01,840 WARN L205 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 123 [2021-06-05 04:59:02,158 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 109 [2021-06-05 04:59:02,693 WARN L205 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 127 [2021-06-05 04:59:02,922 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 100 [2021-06-05 04:59:03,510 WARN L205 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 130 [2021-06-05 04:59:03,758 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 103 [2021-06-05 04:59:04,113 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 116 [2021-06-05 04:59:04,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:04,179 INFO L93 Difference]: Finished difference Result 552 states and 1522 transitions. [2021-06-05 04:59:04,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 04:59:04,180 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:04,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:04,180 INFO L225 Difference]: With dead ends: 552 [2021-06-05 04:59:04,180 INFO L226 Difference]: Without dead ends: 480 [2021-06-05 04:59:04,180 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 5499.5ms TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 04:59:04,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-06-05 04:59:04,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 265. [2021-06-05 04:59:04,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 2.9166666666666665) internal successors, (770), 264 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:04,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 770 transitions. [2021-06-05 04:59:04,184 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 770 transitions. Word has length 20 [2021-06-05 04:59:04,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:04,184 INFO L482 AbstractCegarLoop]: Abstraction has 265 states and 770 transitions. [2021-06-05 04:59:04,184 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:04,184 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 770 transitions. [2021-06-05 04:59:04,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:04,184 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:04,185 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:04,385 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable953 [2021-06-05 04:59:04,385 INFO L430 AbstractCegarLoop]: === Iteration 156 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:04,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:04,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1695383606, now seen corresponding path program 7 times [2021-06-05 04:59:04,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:04,386 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896346775] [2021-06-05 04:59:04,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:04,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:04,618 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:04,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896346775] [2021-06-05 04:59:04,618 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896346775] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:04,618 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [168102261] [2021-06-05 04:59:04,618 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:04,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 04:59:04,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:05,262 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:05,264 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:05,273 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:59:05,282 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:05,290 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:59:05,299 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:59:05,306 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,661 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2021-06-05 04:59:05,661 INFO L628 ElimStorePlain]: treesize reduction 512, result has 43.6 percent of original size [2021-06-05 04:59:05,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,666 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:05,667 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,672 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:05,673 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,677 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:05,677 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,792 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 04:59:05,793 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:05,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:05,798 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,802 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:59:05,804 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:05,807 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:05,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:59:05,809 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,007 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2021-06-05 04:59:06,008 INFO L628 ElimStorePlain]: treesize reduction 28, result has 91.1 percent of original size [2021-06-05 04:59:06,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:06,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:06,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:06,014 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:06,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:06,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:59:06,021 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:06,026 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,124 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:06,142 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-06-05 04:59:06,143 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1009, output treesize:236 [2021-06-05 04:59:06,315 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-06-05 04:59:06,871 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_160, v_prenex_162, array_6], 1=[array_3, v_prenex_161, v_prenex_159]} [2021-06-05 04:59:06,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:59:06,880 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 04:59:06,888 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:06,896 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,902 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,903 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:06,910 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:06,916 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:06,917 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,148 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 57 [2021-06-05 04:59:07,148 INFO L628 ElimStorePlain]: treesize reduction 630, result has 21.2 percent of original size [2021-06-05 04:59:07,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:07,153 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,214 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:07,217 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:07,218 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:07,277 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:07,277 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 04:59:07,277 INFO L518 ElimStorePlain]: Eliminatee v_prenex_161 vanished before elimination [2021-06-05 04:59:07,277 INFO L518 ElimStorePlain]: Eliminatee v_prenex_159 vanished before elimination [2021-06-05 04:59:07,279 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 6 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 04:59:07,280 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:1020, output treesize:131 [2021-06-05 04:59:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:07,475 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [168102261] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:07,475 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:07,475 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 04:59:07,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151462658] [2021-06-05 04:59:07,475 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 04:59:07,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:07,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 04:59:07,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-06-05 04:59:07,476 INFO L87 Difference]: Start difference. First operand 265 states and 770 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:07,743 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 86 [2021-06-05 04:59:08,080 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 96 [2021-06-05 04:59:08,517 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 146 [2021-06-05 04:59:08,987 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 150 [2021-06-05 04:59:09,347 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 134 [2021-06-05 04:59:09,790 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 151 [2021-06-05 04:59:10,295 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 155 [2021-06-05 04:59:10,686 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 139 [2021-06-05 04:59:11,306 WARN L205 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 163 [2021-06-05 04:59:12,126 WARN L205 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 173 [2021-06-05 04:59:12,738 WARN L205 SmtUtils]: Spent 529.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 151 [2021-06-05 04:59:13,513 WARN L205 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 169 [2021-06-05 04:59:14,411 WARN L205 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 181 [2021-06-05 04:59:15,043 WARN L205 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 157 [2021-06-05 04:59:15,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:15,116 INFO L93 Difference]: Finished difference Result 589 states and 1639 transitions. [2021-06-05 04:59:15,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 04:59:15,116 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:15,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:15,117 INFO L225 Difference]: With dead ends: 589 [2021-06-05 04:59:15,117 INFO L226 Difference]: Without dead ends: 559 [2021-06-05 04:59:15,117 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 8038.2ms TimeCoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 04:59:15,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-06-05 04:59:15,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 280. [2021-06-05 04:59:15,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 2.913978494623656) internal successors, (813), 279 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:15,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 813 transitions. [2021-06-05 04:59:15,123 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 813 transitions. Word has length 20 [2021-06-05 04:59:15,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:15,123 INFO L482 AbstractCegarLoop]: Abstraction has 280 states and 813 transitions. [2021-06-05 04:59:15,123 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:15,123 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 813 transitions. [2021-06-05 04:59:15,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:15,124 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:15,124 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:15,345 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1105 [2021-06-05 04:59:15,345 INFO L430 AbstractCegarLoop]: === Iteration 157 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:15,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:15,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1375628278, now seen corresponding path program 8 times [2021-06-05 04:59:15,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:15,345 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151304558] [2021-06-05 04:59:15,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:15,654 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:15,654 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:15,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151304558] [2021-06-05 04:59:15,654 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151304558] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:15,654 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334006018] [2021-06-05 04:59:15,654 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:15,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 04:59:15,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:59:15,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 04:59:15,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:16,549 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:16,550 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:16,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:59:16,551 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:16,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:16,557 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:16,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:16,558 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:16,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:16,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:16,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:16,566 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:16,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:16,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:16,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:16,574 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:16,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:16,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:16,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:16,581 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:16,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:16,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:16,587 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:16,915 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2021-06-05 04:59:16,915 INFO L628 ElimStorePlain]: treesize reduction 394, result has 44.0 percent of original size [2021-06-05 04:59:16,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:16,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:16,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 04:59:16,922 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:16,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:16,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:16,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:16,929 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:16,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:16,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:16,935 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:17,169 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2021-06-05 04:59:17,169 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.6 percent of original size [2021-06-05 04:59:17,174 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:17,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:17,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:59:17,178 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:17,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:17,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:17,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:17,184 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:17,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:17,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:17,190 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:17,300 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2021-06-05 04:59:17,300 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:17,307 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 04:59:17,307 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:865, output treesize:225 [2021-06-05 04:59:17,871 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_181, v_prenex_173, v_prenex_175, array_6, v_prenex_177, v_prenex_179], 1=[v_prenex_180, v_prenex_172, array_3, v_prenex_174, v_prenex_176, v_prenex_178]} [2021-06-05 04:59:17,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:17,880 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:17,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:17,891 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:17,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:17,899 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:17,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:59:17,907 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:17,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:59:17,915 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:17,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:59:17,923 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,285 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 83 [2021-06-05 04:59:18,287 INFO L628 ElimStorePlain]: treesize reduction 1424, result has 13.4 percent of original size [2021-06-05 04:59:18,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 04:59:18,293 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,377 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:18,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:18,383 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,466 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:18,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:18,473 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,553 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:18,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:18,559 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,636 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:18,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:18,641 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:18,717 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:18,717 INFO L518 ElimStorePlain]: Eliminatee v_prenex_180 vanished before elimination [2021-06-05 04:59:18,717 INFO L518 ElimStorePlain]: Eliminatee v_prenex_172 vanished before elimination [2021-06-05 04:59:18,717 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 04:59:18,717 INFO L518 ElimStorePlain]: Eliminatee v_prenex_174 vanished before elimination [2021-06-05 04:59:18,717 INFO L518 ElimStorePlain]: Eliminatee v_prenex_176 vanished before elimination [2021-06-05 04:59:18,717 INFO L518 ElimStorePlain]: Eliminatee v_prenex_178 vanished before elimination [2021-06-05 04:59:18,720 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 04:59:18,720 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 18 variables, input treesize:1761, output treesize:148 [2021-06-05 04:59:18,863 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2021-06-05 04:59:19,037 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2021-06-05 04:59:19,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:19,108 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334006018] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:19,108 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:19,108 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 04:59:19,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465929181] [2021-06-05 04:59:19,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 04:59:19,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:19,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 04:59:19,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 04:59:19,108 INFO L87 Difference]: Start difference. First operand 280 states and 813 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:19,347 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2021-06-05 04:59:19,595 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 80 [2021-06-05 04:59:20,023 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 141 [2021-06-05 04:59:20,258 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2021-06-05 04:59:20,689 WARN L205 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 146 [2021-06-05 04:59:20,926 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 98 [2021-06-05 04:59:21,621 WARN L205 SmtUtils]: Spent 625.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 154 [2021-06-05 04:59:21,849 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2021-06-05 04:59:22,685 WARN L205 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 167 [2021-06-05 04:59:23,404 WARN L205 SmtUtils]: Spent 658.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 157 [2021-06-05 04:59:23,891 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 151 [2021-06-05 04:59:24,135 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 98 [2021-06-05 04:59:25,017 WARN L205 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 170 [2021-06-05 04:59:25,592 WARN L205 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 163 [2021-06-05 04:59:25,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:25,677 INFO L93 Difference]: Finished difference Result 694 states and 1861 transitions. [2021-06-05 04:59:25,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 04:59:25,677 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:25,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:25,678 INFO L225 Difference]: With dead ends: 694 [2021-06-05 04:59:25,678 INFO L226 Difference]: Without dead ends: 622 [2021-06-05 04:59:25,678 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 7191.1ms TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 04:59:25,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-06-05 04:59:25,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 286. [2021-06-05 04:59:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 2.9298245614035086) internal successors, (835), 285 states have internal predecessors, (835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:25,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 835 transitions. [2021-06-05 04:59:25,683 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 835 transitions. Word has length 20 [2021-06-05 04:59:25,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:25,683 INFO L482 AbstractCegarLoop]: Abstraction has 286 states and 835 transitions. [2021-06-05 04:59:25,683 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:25,683 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 835 transitions. [2021-06-05 04:59:25,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:25,683 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:25,684 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:25,896 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1244 [2021-06-05 04:59:25,897 INFO L430 AbstractCegarLoop]: === Iteration 158 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:25,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:25,897 INFO L82 PathProgramCache]: Analyzing trace with hash 814944546, now seen corresponding path program 9 times [2021-06-05 04:59:25,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:25,897 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842686760] [2021-06-05 04:59:25,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:26,296 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:26,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842686760] [2021-06-05 04:59:26,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842686760] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:26,296 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651752250] [2021-06-05 04:59:26,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:26,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 04:59:26,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:59:26,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 04:59:26,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:27,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:27,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:27,018 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:27,329 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 100 [2021-06-05 04:59:27,329 INFO L628 ElimStorePlain]: treesize reduction 181, result has 68.2 percent of original size [2021-06-05 04:59:27,334 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:27,335 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:27,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:27,336 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:27,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:27,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 04:59:27,344 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:27,479 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-05 04:59:27,479 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:27,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:27,489 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:27,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:27,491 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:27,495 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:27,495 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:27,603 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 04:59:27,603 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:27,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:27,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:27,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:59:27,609 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:27,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:27,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:27,614 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:27,716 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 04:59:27,717 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:27,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:27,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:59:27,722 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:27,822 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 04:59:27,823 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:27,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:27,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:59:27,828 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:27,926 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:27,932 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 04:59:27,932 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:577, output treesize:244 [2021-06-05 04:59:28,123 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 87 [2021-06-05 04:59:28,440 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 85 [2021-06-05 04:59:28,688 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_207, v_prenex_209, array_6, v_prenex_211, v_prenex_213, v_prenex_205], 1=[v_prenex_206, v_prenex_208, array_3, v_prenex_210, v_prenex_212, v_prenex_204]} [2021-06-05 04:59:28,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:28,697 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:28,705 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:59:28,714 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:28,722 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:28,730 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:28,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:28,739 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,081 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 88 [2021-06-05 04:59:29,081 INFO L628 ElimStorePlain]: treesize reduction 1182, result has 15.7 percent of original size [2021-06-05 04:59:29,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:59:29,088 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,092 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:29,093 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,169 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:29,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:29,175 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,238 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:29,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:59:29,244 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,304 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:29,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:29,309 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,368 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:29,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:29,372 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:29,429 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:29,430 INFO L518 ElimStorePlain]: Eliminatee v_prenex_206 vanished before elimination [2021-06-05 04:59:29,430 INFO L518 ElimStorePlain]: Eliminatee v_prenex_208 vanished before elimination [2021-06-05 04:59:29,430 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 04:59:29,430 INFO L518 ElimStorePlain]: Eliminatee v_prenex_210 vanished before elimination [2021-06-05 04:59:29,430 INFO L518 ElimStorePlain]: Eliminatee v_prenex_212 vanished before elimination [2021-06-05 04:59:29,430 INFO L518 ElimStorePlain]: Eliminatee v_prenex_204 vanished before elimination [2021-06-05 04:59:29,432 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 04:59:29,432 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1543, output treesize:107 [2021-06-05 04:59:29,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:29,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651752250] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:29,590 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:29,590 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 04:59:29,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855675207] [2021-06-05 04:59:29,590 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 04:59:29,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:29,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 04:59:29,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2021-06-05 04:59:29,591 INFO L87 Difference]: Start difference. First operand 286 states and 835 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:29,870 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 68 [2021-06-05 04:59:30,175 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 76 [2021-06-05 04:59:30,535 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 78 [2021-06-05 04:59:31,135 WARN L205 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 149 [2021-06-05 04:59:31,833 WARN L205 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 159 [2021-06-05 04:59:32,188 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 96 [2021-06-05 04:59:32,561 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 103 [2021-06-05 04:59:32,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:32,626 INFO L93 Difference]: Finished difference Result 521 states and 1525 transitions. [2021-06-05 04:59:32,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 04:59:32,626 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:32,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:32,627 INFO L225 Difference]: With dead ends: 521 [2021-06-05 04:59:32,627 INFO L226 Difference]: Without dead ends: 473 [2021-06-05 04:59:32,627 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 3550.9ms TimeCoverageRelationStatistics Valid=159, Invalid=833, Unknown=0, NotChecked=0, Total=992 [2021-06-05 04:59:32,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-06-05 04:59:32,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 292. [2021-06-05 04:59:32,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 2.924398625429553) internal successors, (851), 291 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 851 transitions. [2021-06-05 04:59:32,631 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 851 transitions. Word has length 20 [2021-06-05 04:59:32,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:32,631 INFO L482 AbstractCegarLoop]: Abstraction has 292 states and 851 transitions. [2021-06-05 04:59:32,631 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:32,631 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 851 transitions. [2021-06-05 04:59:32,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:32,631 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:32,631 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:32,833 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1391 [2021-06-05 04:59:32,833 INFO L430 AbstractCegarLoop]: === Iteration 159 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:32,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:32,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1294229222, now seen corresponding path program 10 times [2021-06-05 04:59:32,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:32,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634977922] [2021-06-05 04:59:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:33,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:33,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634977922] [2021-06-05 04:59:33,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634977922] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:33,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682852601] [2021-06-05 04:59:33,006 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:33,032 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 04:59:33,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:59:33,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 04:59:33,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:33,936 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:33,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:33,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:33,938 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:33,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:33,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:33,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:59:33,945 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:33,998 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:33,999 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:34,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:34,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:34,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:59:34,015 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:34,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:34,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:34,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:34,025 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:34,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:34,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:34,034 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:34,512 WARN L205 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2021-06-05 04:59:34,512 INFO L628 ElimStorePlain]: treesize reduction 577, result has 44.9 percent of original size [2021-06-05 04:59:34,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:34,518 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:34,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:34,519 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:34,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:34,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:34,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:34,526 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:34,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:59:34,531 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:34,845 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2021-06-05 04:59:34,845 INFO L628 ElimStorePlain]: treesize reduction 36, result has 91.4 percent of original size [2021-06-05 04:59:34,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:34,851 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:34,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:34,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:34,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:59:34,857 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:34,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:34,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:34,862 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:35,012 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 04:59:35,012 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:35,017 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:35,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:35,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:59:35,019 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:35,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:35,023 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:35,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:35,025 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:35,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:35,029 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:35,174 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-05 04:59:35,174 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:35,181 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-06-05 04:59:35,181 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:320 [2021-06-05 04:59:35,424 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2021-06-05 04:59:35,622 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_229, v_prenex_231, array_6, v_prenex_233, v_prenex_227], 1=[v_prenex_228, array_3, v_prenex_230, v_prenex_232, v_prenex_226]} [2021-06-05 04:59:35,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:35,631 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:35,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 04:59:35,639 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:35,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:35,659 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:35,667 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:35,667 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:35,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:59:35,676 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:35,682 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:35,683 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:36,057 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2021-06-05 04:59:36,058 INFO L628 ElimStorePlain]: treesize reduction 1251, result has 18.0 percent of original size [2021-06-05 04:59:36,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:36,063 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:36,168 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 04:59:36,169 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:36,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:36,174 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:36,278 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 04:59:36,279 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:36,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:36,284 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:36,386 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 04:59:36,386 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:36,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:36,391 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:36,491 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:36,491 INFO L518 ElimStorePlain]: Eliminatee v_prenex_228 vanished before elimination [2021-06-05 04:59:36,491 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 04:59:36,491 INFO L518 ElimStorePlain]: Eliminatee v_prenex_230 vanished before elimination [2021-06-05 04:59:36,491 INFO L518 ElimStorePlain]: Eliminatee v_prenex_232 vanished before elimination [2021-06-05 04:59:36,491 INFO L518 ElimStorePlain]: Eliminatee v_prenex_226 vanished before elimination [2021-06-05 04:59:36,494 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 04:59:36,495 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 15 variables, input treesize:1765, output treesize:216 [2021-06-05 04:59:36,657 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-06-05 04:59:36,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:36,835 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682852601] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:36,835 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:36,835 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 04:59:36,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866591233] [2021-06-05 04:59:36,835 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 04:59:36,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:36,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 04:59:36,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 04:59:36,836 INFO L87 Difference]: Start difference. First operand 292 states and 851 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:37,211 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2021-06-05 04:59:37,538 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 97 [2021-06-05 04:59:37,960 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 97 [2021-06-05 04:59:38,644 WARN L205 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 142 [2021-06-05 04:59:39,313 WARN L205 SmtUtils]: Spent 584.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 139 [2021-06-05 04:59:39,826 WARN L205 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 117 [2021-06-05 04:59:40,309 WARN L205 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 104 [2021-06-05 04:59:40,853 WARN L205 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 119 [2021-06-05 04:59:41,422 WARN L205 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 124 [2021-06-05 04:59:41,796 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 108 [2021-06-05 04:59:42,304 WARN L205 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 111 [2021-06-05 04:59:42,913 WARN L205 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 126 [2021-06-05 04:59:43,314 WARN L205 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 111 [2021-06-05 04:59:43,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:43,417 INFO L93 Difference]: Finished difference Result 562 states and 1555 transitions. [2021-06-05 04:59:43,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 04:59:43,417 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:43,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:43,418 INFO L225 Difference]: With dead ends: 562 [2021-06-05 04:59:43,418 INFO L226 Difference]: Without dead ends: 490 [2021-06-05 04:59:43,418 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 7018.5ms TimeCoverageRelationStatistics Valid=201, Invalid=855, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 04:59:43,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-06-05 04:59:43,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 292. [2021-06-05 04:59:43,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 2.924398625429553) internal successors, (851), 291 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 851 transitions. [2021-06-05 04:59:43,422 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 851 transitions. Word has length 20 [2021-06-05 04:59:43,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:43,422 INFO L482 AbstractCegarLoop]: Abstraction has 292 states and 851 transitions. [2021-06-05 04:59:43,422 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:43,422 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 851 transitions. [2021-06-05 04:59:43,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:43,423 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:43,423 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:43,623 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1535 [2021-06-05 04:59:43,623 INFO L430 AbstractCegarLoop]: === Iteration 160 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:43,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:43,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1829459024, now seen corresponding path program 11 times [2021-06-05 04:59:43,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:43,624 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613142437] [2021-06-05 04:59:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:43,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:43,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:43,803 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:43,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613142437] [2021-06-05 04:59:43,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613142437] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:43,803 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411491403] [2021-06-05 04:59:43,803 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:43,830 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 04:59:43,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:59:43,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 04:59:43,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:44,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:59:44,148 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:59:44,154 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:44,161 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 04:59:44,167 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:44,173 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 04:59:44,180 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 04:59:44,189 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 04:59:44,197 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:44,203 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,208 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:44,208 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:44,215 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:44,220 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:59:44,229 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:44,238 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,243 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:44,243 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 04:59:44,250 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-06-05 04:59:44,255 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,260 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:44,261 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:59:44,267 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 04:59:44,273 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 04:59:44,279 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:59:44,285 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 04:59:44,291 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:44,297 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:44,305 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:44,314 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:44,323 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:59:44,333 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:44,340 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:44,357 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 04:59:44,365 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:59:44,372 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 04:59:44,378 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 04:59:44,384 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,389 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:44,389 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:44,395 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 04:59:44,401 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:59:44,407 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:59:44,412 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-06-05 04:59:44,418 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,423 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:44,423 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:44,429 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 04:59:44,434 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,440 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:44,440 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:59:44,446 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,451 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:44,451 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 04:59:44,457 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-06-05 04:59:44,464 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:44,472 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:44,477 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 04:59:44,483 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:59:44,490 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:59:44,496 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:59:44,501 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:59:44,507 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:59:44,512 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:44,517 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,521 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:44,522 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 04:59:44,527 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 04:59:44,533 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:59:44,539 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:44,544 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:59:44,549 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 04:59:44,554 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,558 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:44,559 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 04:59:44,564 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:44,752 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 40 [2021-06-05 04:59:44,753 INFO L628 ElimStorePlain]: treesize reduction 734, result has 21.3 percent of original size [2021-06-05 04:59:44,754 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 04:59:44,754 INFO L247 ElimStorePlain]: Needed 67 recursive calls to eliminate 1 variables, input treesize:3205, output treesize:199 [2021-06-05 04:59:45,138 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-06-05 04:59:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:45,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411491403] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:45,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:45,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 04:59:45,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170777015] [2021-06-05 04:59:45,342 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 04:59:45,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:45,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 04:59:45,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-06-05 04:59:45,342 INFO L87 Difference]: Start difference. First operand 292 states and 851 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:45,669 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 46 [2021-06-05 04:59:45,978 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 53 [2021-06-05 04:59:46,263 WARN L205 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2021-06-05 04:59:46,856 WARN L205 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 93 [2021-06-05 04:59:47,380 WARN L205 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2021-06-05 04:59:47,699 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2021-06-05 04:59:48,233 WARN L205 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 83 [2021-06-05 04:59:48,681 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 69 [2021-06-05 04:59:49,243 WARN L205 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 88 [2021-06-05 04:59:49,534 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 63 [2021-06-05 04:59:50,132 WARN L205 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 90 [2021-06-05 04:59:50,440 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 66 [2021-06-05 04:59:50,936 WARN L205 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 76 [2021-06-05 04:59:50,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:50,982 INFO L93 Difference]: Finished difference Result 580 states and 1605 transitions. [2021-06-05 04:59:50,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 04:59:50,982 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:50,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:50,983 INFO L225 Difference]: With dead ends: 580 [2021-06-05 04:59:50,983 INFO L226 Difference]: Without dead ends: 508 [2021-06-05 04:59:50,983 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 6012.1ms TimeCoverageRelationStatistics Valid=214, Invalid=908, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 04:59:50,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-06-05 04:59:50,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 292. [2021-06-05 04:59:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 291 states have (on average 2.924398625429553) internal successors, (851), 291 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:50,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 851 transitions. [2021-06-05 04:59:50,987 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 851 transitions. Word has length 20 [2021-06-05 04:59:50,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:50,987 INFO L482 AbstractCegarLoop]: Abstraction has 292 states and 851 transitions. [2021-06-05 04:59:50,987 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:50,987 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 851 transitions. [2021-06-05 04:59:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:50,987 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:50,987 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:51,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1743,39 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:51,188 INFO L430 AbstractCegarLoop]: === Iteration 161 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:51,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:51,188 INFO L82 PathProgramCache]: Analyzing trace with hash -361470104, now seen corresponding path program 12 times [2021-06-05 04:59:51,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:51,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120060495] [2021-06-05 04:59:51,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:51,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:51,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:51,373 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:51,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120060495] [2021-06-05 04:59:51,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120060495] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:51,374 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454166847] [2021-06-05 04:59:51,374 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:51,407 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 04:59:51,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 04:59:51,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 04:59:51,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:52,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,173 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:52,175 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:52,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:59:52,184 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:52,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:52,194 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:52,202 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,203 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:52,204 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:52,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,213 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:52,214 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:52,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:52,224 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:52,650 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2021-06-05 04:59:52,650 INFO L628 ElimStorePlain]: treesize reduction 610, result has 43.9 percent of original size [2021-06-05 04:59:52,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:52,657 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:52,661 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,662 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:52,664 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:52,668 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:52,669 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:52,821 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 04:59:52,821 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:52,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,826 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:59:52,827 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:52,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:52,833 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:52,837 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:52,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:59:52,838 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,118 WARN L205 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 75 [2021-06-05 04:59:53,118 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.7 percent of original size [2021-06-05 04:59:53,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:53,123 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:53,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:59:53,124 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:53,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:53,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:59:53,130 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:53,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:53,135 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:53,272 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 04:59:53,273 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:53,280 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-06-05 04:59:53,280 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:334 [2021-06-05 04:59:53,495 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 101 [2021-06-05 04:59:53,696 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2021-06-05 04:59:54,051 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_253, array_6, v_prenex_255, v_prenex_257], 1=[array_0, v_prenex_252, v_prenex_254, v_prenex_256]} [2021-06-05 04:59:54,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:59:54,058 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,063 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,064 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,069 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,070 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,075 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,076 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,081 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,081 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,086 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,087 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,315 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 73 [2021-06-05 04:59:54,315 INFO L628 ElimStorePlain]: treesize reduction 706, result has 22.1 percent of original size [2021-06-05 04:59:54,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:54,320 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,391 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:54,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:54,396 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,463 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:54,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 04:59:54,468 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,471 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 04:59:54,472 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:54,524 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:54,525 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 04:59:54,525 INFO L518 ElimStorePlain]: Eliminatee v_prenex_252 vanished before elimination [2021-06-05 04:59:54,525 INFO L518 ElimStorePlain]: Eliminatee v_prenex_254 vanished before elimination [2021-06-05 04:59:54,525 INFO L518 ElimStorePlain]: Eliminatee v_prenex_256 vanished before elimination [2021-06-05 04:59:54,527 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 04:59:54,527 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:1167, output treesize:122 [2021-06-05 04:59:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:54,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454166847] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:54,711 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 04:59:54,711 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 04:59:54,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063796482] [2021-06-05 04:59:54,711 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 04:59:54,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 04:59:54,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 04:59:54,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 04:59:54,712 INFO L87 Difference]: Start difference. First operand 292 states and 851 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:55,190 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 104 [2021-06-05 04:59:55,582 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 143 [2021-06-05 04:59:56,321 WARN L205 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 171 [2021-06-05 04:59:56,900 WARN L205 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 173 [2021-06-05 04:59:57,776 WARN L205 SmtUtils]: Spent 791.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 189 [2021-06-05 04:59:57,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 04:59:57,842 INFO L93 Difference]: Finished difference Result 531 states and 1498 transitions. [2021-06-05 04:59:57,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 04:59:57,843 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 04:59:57,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 04:59:57,843 INFO L225 Difference]: With dead ends: 531 [2021-06-05 04:59:57,843 INFO L226 Difference]: Without dead ends: 491 [2021-06-05 04:59:57,843 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3751.9ms TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2021-06-05 04:59:57,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-06-05 04:59:57,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 304. [2021-06-05 04:59:57,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 303 states have (on average 2.9207920792079207) internal successors, (885), 303 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:57,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 885 transitions. [2021-06-05 04:59:57,847 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 885 transitions. Word has length 20 [2021-06-05 04:59:57,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 04:59:57,847 INFO L482 AbstractCegarLoop]: Abstraction has 304 states and 885 transitions. [2021-06-05 04:59:57,847 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 04:59:57,847 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 885 transitions. [2021-06-05 04:59:57,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 04:59:57,848 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 04:59:57,848 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 04:59:58,049 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1836,40 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:58,050 INFO L430 AbstractCegarLoop]: === Iteration 162 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 04:59:58,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 04:59:58,050 INFO L82 PathProgramCache]: Analyzing trace with hash -758387758, now seen corresponding path program 13 times [2021-06-05 04:59:58,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 04:59:58,050 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456834342] [2021-06-05 04:59:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 04:59:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:58,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 04:59:58,234 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 04:59:58,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456834342] [2021-06-05 04:59:58,234 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [456834342] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 04:59:58,234 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022720965] [2021-06-05 04:59:58,234 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 04:59:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 04:59:58,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 04:59:58,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 04:59:59,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 04:59:59,043 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:59,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,049 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:59,050 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:59,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:59,056 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:59,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:59,077 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:59,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 04:59:59,086 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:59,093 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:59,094 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:59,491 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 83 [2021-06-05 04:59:59,492 INFO L628 ElimStorePlain]: treesize reduction 552, result has 45.7 percent of original size [2021-06-05 04:59:59,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:59,498 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:59,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:59:59,504 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:59,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 04:59:59,509 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:59,668 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 04:59:59,668 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 04:59:59,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:59,675 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:59,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 04:59:59,682 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:59,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:59,687 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:59,953 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2021-06-05 04:59:59,953 INFO L628 ElimStorePlain]: treesize reduction 30, result has 92.4 percent of original size [2021-06-05 04:59:59,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 04:59:59,959 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:59,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 04:59:59,965 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 04:59:59,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 04:59:59,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 04:59:59,970 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:00,201 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2021-06-05 05:00:00,202 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.7 percent of original size [2021-06-05 05:00:00,214 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-06-05 05:00:00,214 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1129, output treesize:309 [2021-06-05 05:00:00,403 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 93 [2021-06-05 05:00:00,809 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_280, v_prenex_276, array_6, v_prenex_278], 1=[array_0, v_prenex_275, v_prenex_277, v_prenex_279]} [2021-06-05 05:00:00,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:00,825 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:00,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:00,831 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:00,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:00,838 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:00,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:00:00,844 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:00,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:00,851 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:00,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:00,856 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:01,103 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 69 [2021-06-05 05:00:01,103 INFO L628 ElimStorePlain]: treesize reduction 882, result has 18.7 percent of original size [2021-06-05 05:00:01,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:01,108 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:01,182 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:01,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:01,187 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:01,260 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:01,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:01,265 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:01,335 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:01,335 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:00:01,335 INFO L518 ElimStorePlain]: Eliminatee v_prenex_275 vanished before elimination [2021-06-05 05:00:01,335 INFO L518 ElimStorePlain]: Eliminatee v_prenex_277 vanished before elimination [2021-06-05 05:00:01,335 INFO L518 ElimStorePlain]: Eliminatee v_prenex_279 vanished before elimination [2021-06-05 05:00:01,337 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 05:00:01,337 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:1235, output treesize:143 [2021-06-05 05:00:01,475 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-06-05 05:00:01,681 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:01,681 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022720965] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:01,681 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:01,681 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:00:01,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321976259] [2021-06-05 05:00:01,682 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:00:01,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:01,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:00:01,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:00:01,682 INFO L87 Difference]: Start difference. First operand 304 states and 885 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:02,161 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2021-06-05 05:00:02,529 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 130 [2021-06-05 05:00:03,066 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 138 [2021-06-05 05:00:03,237 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2021-06-05 05:00:03,682 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 153 [2021-06-05 05:00:03,875 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2021-06-05 05:00:04,345 WARN L205 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 156 [2021-06-05 05:00:04,750 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2021-06-05 05:00:05,228 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 160 [2021-06-05 05:00:05,413 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2021-06-05 05:00:05,921 WARN L205 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 163 [2021-06-05 05:00:06,372 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 150 [2021-06-05 05:00:06,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:06,435 INFO L93 Difference]: Finished difference Result 709 states and 1940 transitions. [2021-06-05 05:00:06,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 05:00:06,436 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:06,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:06,437 INFO L225 Difference]: With dead ends: 709 [2021-06-05 05:00:06,437 INFO L226 Difference]: Without dead ends: 637 [2021-06-05 05:00:06,437 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 5213.8ms TimeCoverageRelationStatistics Valid=209, Invalid=913, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 05:00:06,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2021-06-05 05:00:06,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 299. [2021-06-05 05:00:06,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 298 states have (on average 2.9261744966442955) internal successors, (872), 298 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:06,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 872 transitions. [2021-06-05 05:00:06,444 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 872 transitions. Word has length 20 [2021-06-05 05:00:06,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:06,444 INFO L482 AbstractCegarLoop]: Abstraction has 299 states and 872 transitions. [2021-06-05 05:00:06,444 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:06,444 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 872 transitions. [2021-06-05 05:00:06,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:06,445 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:06,445 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:06,667 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1986,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:06,668 INFO L430 AbstractCegarLoop]: === Iteration 163 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:06,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:06,668 INFO L82 PathProgramCache]: Analyzing trace with hash -678810648, now seen corresponding path program 14 times [2021-06-05 05:00:06,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:06,668 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108074667] [2021-06-05 05:00:06,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:07,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:07,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:07,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108074667] [2021-06-05 05:00:07,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108074667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:07,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45223532] [2021-06-05 05:00:07,015 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:07,042 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:00:07,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:07,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:00:07,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:07,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:07,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:07,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:07,914 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:07,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:07,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:07,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:00:07,923 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:07,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:07,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:07,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:07,933 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:07,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:07,942 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:07,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:07,943 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:07,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:07,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:07,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:07,955 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:07,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:07,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:07,965 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:08,400 WARN L205 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2021-06-05 05:00:08,400 INFO L628 ElimStorePlain]: treesize reduction 562, result has 45.1 percent of original size [2021-06-05 05:00:08,407 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:08,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:08,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:08,409 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:08,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:08,414 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:08,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:08,415 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:08,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:08,420 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:08,736 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2021-06-05 05:00:08,736 INFO L628 ElimStorePlain]: treesize reduction 31, result has 93.0 percent of original size [2021-06-05 05:00:08,741 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:08,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:08,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:08,743 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:08,747 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:08,748 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:08,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:08,749 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:08,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:08,754 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:08,906 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 05:00:08,906 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:08,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:00:08,912 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:08,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:08,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:08,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:08,918 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:08,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:08,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:08,923 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:09,176 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2021-06-05 05:00:09,177 INFO L628 ElimStorePlain]: treesize reduction 24, result has 92.7 percent of original size [2021-06-05 05:00:09,183 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-06-05 05:00:09,183 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1129, output treesize:278 [2021-06-05 05:00:09,402 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2021-06-05 05:00:09,762 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_296, array_6, v_prenex_298], 1=[array_3, v_prenex_295, v_prenex_297]} [2021-06-05 05:00:09,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:09,770 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:09,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:09,777 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:09,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:09,784 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:09,791 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:09,791 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:09,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:09,798 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:09,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:00:09,805 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:10,091 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 62 [2021-06-05 05:00:10,092 INFO L628 ElimStorePlain]: treesize reduction 700, result has 23.3 percent of original size [2021-06-05 05:00:10,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:00:10,096 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:10,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:10,100 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:10,247 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2021-06-05 05:00:10,247 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.5 percent of original size [2021-06-05 05:00:10,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:10,257 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:10,397 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-06-05 05:00:10,397 INFO L628 ElimStorePlain]: treesize reduction 7, result has 96.2 percent of original size [2021-06-05 05:00:10,397 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:00:10,397 INFO L518 ElimStorePlain]: Eliminatee v_prenex_295 vanished before elimination [2021-06-05 05:00:10,398 INFO L518 ElimStorePlain]: Eliminatee v_prenex_297 vanished before elimination [2021-06-05 05:00:10,400 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 6 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:00:10,400 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 9 variables, input treesize:1020, output treesize:144 [2021-06-05 05:00:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:10,580 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45223532] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:10,580 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:10,580 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:00:10,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842125334] [2021-06-05 05:00:10,581 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:00:10,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:10,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:00:10,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:00:10,581 INFO L87 Difference]: Start difference. First operand 299 states and 872 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:11,193 WARN L205 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 101 [2021-06-05 05:00:11,629 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 105 [2021-06-05 05:00:12,478 WARN L205 SmtUtils]: Spent 787.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 163 [2021-06-05 05:00:13,217 WARN L205 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 146 [2021-06-05 05:00:13,454 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2021-06-05 05:00:13,754 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2021-06-05 05:00:13,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:13,795 INFO L93 Difference]: Finished difference Result 495 states and 1424 transitions. [2021-06-05 05:00:13,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:00:13,795 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:13,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:13,796 INFO L225 Difference]: With dead ends: 495 [2021-06-05 05:00:13,796 INFO L226 Difference]: Without dead ends: 480 [2021-06-05 05:00:13,796 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 3959.2ms TimeCoverageRelationStatistics Valid=124, Invalid=578, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:00:13,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-06-05 05:00:13,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 305. [2021-06-05 05:00:13,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 2.9309210526315788) internal successors, (891), 304 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:13,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 891 transitions. [2021-06-05 05:00:13,800 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 891 transitions. Word has length 20 [2021-06-05 05:00:13,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:13,800 INFO L482 AbstractCegarLoop]: Abstraction has 305 states and 891 transitions. [2021-06-05 05:00:13,800 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:13,800 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 891 transitions. [2021-06-05 05:00:13,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:13,801 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:13,801 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:14,001 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2224 [2021-06-05 05:00:14,001 INFO L430 AbstractCegarLoop]: === Iteration 164 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:14,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:14,002 INFO L82 PathProgramCache]: Analyzing trace with hash -199525972, now seen corresponding path program 15 times [2021-06-05 05:00:14,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:14,002 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718174133] [2021-06-05 05:00:14,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:14,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:14,173 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:14,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718174133] [2021-06-05 05:00:14,173 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718174133] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:14,173 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100193190] [2021-06-05 05:00:14,173 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:14,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:00:14,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:14,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:00:14,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:14,780 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:14,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:14,781 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,095 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 102 [2021-06-05 05:00:15,096 INFO L628 ElimStorePlain]: treesize reduction 183, result has 67.9 percent of original size [2021-06-05 05:00:15,101 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:15,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:15,102 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,253 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-05 05:00:15,253 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:15,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:15,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:15,259 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,420 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 05:00:15,421 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:15,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:15,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:15,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:15,427 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,432 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:15,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:15,433 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,579 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 05:00:15,579 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:15,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:15,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:15,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:15,586 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,590 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:15,591 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,706 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 05:00:15,707 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:15,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:15,712 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:15,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:00:15,713 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:15,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:15,719 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:15,820 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-05 05:00:15,820 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:15,825 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:00:15,826 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:577, output treesize:243 [2021-06-05 05:00:16,022 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2021-06-05 05:00:16,215 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_317, v_prenex_319, array_6, v_prenex_321, v_prenex_313, v_prenex_315], 1=[v_prenex_316, v_prenex_318, array_3, v_prenex_320, v_prenex_312, v_prenex_314]} [2021-06-05 05:00:16,224 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-06-05 05:00:16,226 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:00:16,241 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:00:16,251 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-06-05 05:00:16,262 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:00:16,271 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:00:16,280 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,638 WARN L205 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 82 [2021-06-05 05:00:16,639 INFO L628 ElimStorePlain]: treesize reduction 1379, result has 13.7 percent of original size [2021-06-05 05:00:16,644 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:16,645 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,731 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:16,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:16,736 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,820 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:16,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:16,825 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,907 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:16,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:16,912 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:16,992 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:16,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:16,997 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:17,074 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:17,075 INFO L518 ElimStorePlain]: Eliminatee v_prenex_316 vanished before elimination [2021-06-05 05:00:17,075 INFO L518 ElimStorePlain]: Eliminatee v_prenex_318 vanished before elimination [2021-06-05 05:00:17,075 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:00:17,075 INFO L518 ElimStorePlain]: Eliminatee v_prenex_320 vanished before elimination [2021-06-05 05:00:17,075 INFO L518 ElimStorePlain]: Eliminatee v_prenex_312 vanished before elimination [2021-06-05 05:00:17,075 INFO L518 ElimStorePlain]: Eliminatee v_prenex_314 vanished before elimination [2021-06-05 05:00:17,077 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:00:17,077 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 18 variables, input treesize:1719, output treesize:148 [2021-06-05 05:00:17,215 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 33 [2021-06-05 05:00:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:17,471 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100193190] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:17,471 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:17,471 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:00:17,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933808929] [2021-06-05 05:00:17,471 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:00:17,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:17,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:00:17,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:00:17,471 INFO L87 Difference]: Start difference. First operand 305 states and 891 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:17,910 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2021-06-05 05:00:18,210 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2021-06-05 05:00:18,688 WARN L205 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 146 [2021-06-05 05:00:19,061 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2021-06-05 05:00:19,305 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 80 [2021-06-05 05:00:19,734 WARN L205 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 93 [2021-06-05 05:00:20,016 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 83 [2021-06-05 05:00:20,220 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2021-06-05 05:00:20,677 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 96 [2021-06-05 05:00:20,951 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2021-06-05 05:00:21,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:21,019 INFO L93 Difference]: Finished difference Result 631 states and 1725 transitions. [2021-06-05 05:00:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:00:21,019 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:21,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:21,020 INFO L225 Difference]: With dead ends: 631 [2021-06-05 05:00:21,020 INFO L226 Difference]: Without dead ends: 559 [2021-06-05 05:00:21,020 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 3940.8ms TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:00:21,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-06-05 05:00:21,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 302. [2021-06-05 05:00:21,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 2.9235880398671097) internal successors, (880), 301 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:21,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 880 transitions. [2021-06-05 05:00:21,025 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 880 transitions. Word has length 20 [2021-06-05 05:00:21,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:21,025 INFO L482 AbstractCegarLoop]: Abstraction has 302 states and 880 transitions. [2021-06-05 05:00:21,026 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:21,026 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 880 transitions. [2021-06-05 05:00:21,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:21,026 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:21,026 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:21,240 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2415,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:21,241 INFO L430 AbstractCegarLoop]: === Iteration 165 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:21,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:21,241 INFO L82 PathProgramCache]: Analyzing trace with hash 335703830, now seen corresponding path program 16 times [2021-06-05 05:00:21,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:21,241 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212279928] [2021-06-05 05:00:21,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:21,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:21,534 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:21,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212279928] [2021-06-05 05:00:21,534 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212279928] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:21,534 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253990090] [2021-06-05 05:00:21,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:21,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:00:21,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:21,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:00:21,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:22,017 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 59 [2021-06-05 05:00:22,570 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:22,571 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:22,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:22,572 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:22,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:22,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:22,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:22,582 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:22,590 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:22,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:22,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:22,592 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:22,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:22,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:22,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:00:22,603 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:22,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:22,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:22,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:22,610 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:22,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:22,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:22,623 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:23,033 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2021-06-05 05:00:23,033 INFO L628 ElimStorePlain]: treesize reduction 610, result has 43.9 percent of original size [2021-06-05 05:00:23,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:23,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:23,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:23,040 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:23,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:23,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:23,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:00:23,046 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:23,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:23,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:23,052 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:23,217 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 05:00:23,217 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:23,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:23,222 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:23,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:23,223 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:23,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:23,228 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:23,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:00:23,230 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:23,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:23,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:23,235 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:23,530 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2021-06-05 05:00:23,531 INFO L628 ElimStorePlain]: treesize reduction 24, result has 94.3 percent of original size [2021-06-05 05:00:23,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:23,535 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:23,536 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:23,536 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:23,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:23,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:23,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:00:23,542 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:23,546 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:23,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:23,547 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:23,795 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2021-06-05 05:00:23,796 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.7 percent of original size [2021-06-05 05:00:23,803 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-06-05 05:00:23,804 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:326 [2021-06-05 05:00:24,027 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 93 [2021-06-05 05:00:24,299 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_340, v_prenex_342, array_6, v_prenex_344], 1=[v_prenex_339, array_0, v_prenex_341, v_prenex_343]} [2021-06-05 05:00:24,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:00:24,306 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:24,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:24,312 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:24,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:24,318 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-06-05 05:00:24,324 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:24,324 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:24,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:24,331 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:24,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:24,337 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:24,586 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 69 [2021-06-05 05:00:24,586 INFO L628 ElimStorePlain]: treesize reduction 879, result has 18.8 percent of original size [2021-06-05 05:00:24,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:24,591 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:24,667 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:24,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:24,672 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:24,746 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:24,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:24,751 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:24,820 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:24,821 INFO L518 ElimStorePlain]: Eliminatee v_prenex_339 vanished before elimination [2021-06-05 05:00:24,821 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:00:24,821 INFO L518 ElimStorePlain]: Eliminatee v_prenex_341 vanished before elimination [2021-06-05 05:00:24,821 INFO L518 ElimStorePlain]: Eliminatee v_prenex_343 vanished before elimination [2021-06-05 05:00:24,823 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 05:00:24,823 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:1235, output treesize:143 [2021-06-05 05:00:24,960 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 35 [2021-06-05 05:00:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:25,176 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253990090] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:25,177 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:25,177 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:00:25,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592669599] [2021-06-05 05:00:25,177 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:00:25,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:25,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:00:25,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:00:25,177 INFO L87 Difference]: Start difference. First operand 302 states and 880 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:25,734 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 101 [2021-06-05 05:00:26,145 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 107 [2021-06-05 05:00:26,542 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 143 [2021-06-05 05:00:26,824 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2021-06-05 05:00:27,144 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 88 [2021-06-05 05:00:27,383 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-06-05 05:00:27,671 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2021-06-05 05:00:28,028 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 98 [2021-06-05 05:00:28,293 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 79 [2021-06-05 05:00:28,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:28,332 INFO L93 Difference]: Finished difference Result 578 states and 1612 transitions. [2021-06-05 05:00:28,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 05:00:28,332 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:28,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:28,333 INFO L225 Difference]: With dead ends: 578 [2021-06-05 05:00:28,333 INFO L226 Difference]: Without dead ends: 548 [2021-06-05 05:00:28,333 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 3884.0ms TimeCoverageRelationStatistics Valid=144, Invalid=726, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:00:28,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2021-06-05 05:00:28,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 302. [2021-06-05 05:00:28,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 2.9235880398671097) internal successors, (880), 301 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:28,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 880 transitions. [2021-06-05 05:00:28,338 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 880 transitions. Word has length 20 [2021-06-05 05:00:28,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:28,339 INFO L482 AbstractCegarLoop]: Abstraction has 302 states and 880 transitions. [2021-06-05 05:00:28,339 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:28,339 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 880 transitions. [2021-06-05 05:00:28,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:28,339 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:28,339 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:28,562 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2535,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:28,562 INFO L430 AbstractCegarLoop]: === Iteration 166 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:28,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:28,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1363016558, now seen corresponding path program 17 times [2021-06-05 05:00:28,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:28,563 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463987972] [2021-06-05 05:00:28,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:28,737 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:28,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463987972] [2021-06-05 05:00:28,737 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463987972] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:28,737 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41266278] [2021-06-05 05:00:28,737 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:28,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:00:28,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:28,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:00:28,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:29,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:29,006 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:00:29,011 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:29,015 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:29,020 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:29,024 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:00:29,029 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:00:29,033 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:29,038 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:29,043 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:00:29,047 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:29,052 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:29,056 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:29,060 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:00:29,065 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:29,069 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:29,073 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:00:29,078 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:29,082 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:29,086 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:29,091 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:00:29,096 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:29,100 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:00:29,104 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:00:29,108 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:29,286 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-06-05 05:00:29,286 INFO L628 ElimStorePlain]: treesize reduction 300, result has 43.0 percent of original size [2021-06-05 05:00:29,287 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 05:00:29,288 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 1 variables, input treesize:1111, output treesize:226 [2021-06-05 05:00:29,576 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-06-05 05:00:29,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:29,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41266278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:29,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:29,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 05:00:29,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495596642] [2021-06-05 05:00:29,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:00:29,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:29,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:00:29,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:00:29,783 INFO L87 Difference]: Start difference. First operand 302 states and 880 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:30,106 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2021-06-05 05:00:30,315 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2021-06-05 05:00:30,620 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2021-06-05 05:00:30,863 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 63 [2021-06-05 05:00:31,096 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2021-06-05 05:00:31,406 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2021-06-05 05:00:31,686 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2021-06-05 05:00:32,011 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2021-06-05 05:00:32,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:32,037 INFO L93 Difference]: Finished difference Result 578 states and 1600 transitions. [2021-06-05 05:00:32,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:00:32,037 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:32,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:32,038 INFO L225 Difference]: With dead ends: 578 [2021-06-05 05:00:32,038 INFO L226 Difference]: Without dead ends: 534 [2021-06-05 05:00:32,038 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 2676.8ms TimeCoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:00:32,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-06-05 05:00:32,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 305. [2021-06-05 05:00:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 2.9309210526315788) internal successors, (891), 304 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:32,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 891 transitions. [2021-06-05 05:00:32,042 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 891 transitions. Word has length 20 [2021-06-05 05:00:32,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:32,042 INFO L482 AbstractCegarLoop]: Abstraction has 305 states and 891 transitions. [2021-06-05 05:00:32,042 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:32,043 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 891 transitions. [2021-06-05 05:00:32,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:32,043 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:32,043 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:32,243 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2729 [2021-06-05 05:00:32,244 INFO L430 AbstractCegarLoop]: === Iteration 167 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:32,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:32,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1536264250, now seen corresponding path program 18 times [2021-06-05 05:00:32,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:32,244 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578080151] [2021-06-05 05:00:32,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:32,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:32,501 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:32,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578080151] [2021-06-05 05:00:32,501 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578080151] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:32,501 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473100247] [2021-06-05 05:00:32,502 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:32,536 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:00:32,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:32,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:00:32,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:33,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:33,447 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:33,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:33,448 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:33,456 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:33,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:33,457 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:33,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:33,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:33,467 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:33,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:33,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:33,476 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:33,484 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:33,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:00:33,485 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,493 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:33,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:33,495 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,964 WARN L205 SmtUtils]: Spent 469.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 86 [2021-06-05 05:00:33,965 INFO L628 ElimStorePlain]: treesize reduction 657, result has 43.2 percent of original size [2021-06-05 05:00:33,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:33,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:33,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:33,971 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:33,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:33,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:33,978 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:33,982 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:33,983 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:34,152 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 05:00:34,152 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:34,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:34,167 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:34,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:34,169 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:34,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:34,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:34,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:00:34,177 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:34,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:34,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:34,183 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:34,346 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 05:00:34,347 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:34,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:34,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:34,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:34,353 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:34,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:34,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:34,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:34,359 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:34,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:34,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:00:34,364 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:34,673 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 71 [2021-06-05 05:00:34,674 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.7 percent of original size [2021-06-05 05:00:34,682 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-06-05 05:00:34,682 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1273, output treesize:360 [2021-06-05 05:00:34,922 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 102 [2021-06-05 05:00:35,147 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 87 [2021-06-05 05:00:35,335 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_364, array_6, v_prenex_366, v_prenex_368], 1=[array_0, v_prenex_363, v_prenex_365, v_prenex_367]} [2021-06-05 05:00:35,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:35,342 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:35,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:35,349 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:35,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:35,356 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:35,362 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:00:35,363 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:35,369 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:35,369 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:35,375 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:35,375 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:35,608 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 73 [2021-06-05 05:00:35,608 INFO L628 ElimStorePlain]: treesize reduction 754, result has 21.0 percent of original size [2021-06-05 05:00:35,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:35,613 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:35,617 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:35,617 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:35,676 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:35,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:35,681 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:35,737 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:35,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:35,742 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:35,797 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:35,798 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:00:35,798 INFO L518 ElimStorePlain]: Eliminatee v_prenex_363 vanished before elimination [2021-06-05 05:00:35,798 INFO L518 ElimStorePlain]: Eliminatee v_prenex_365 vanished before elimination [2021-06-05 05:00:35,798 INFO L518 ElimStorePlain]: Eliminatee v_prenex_367 vanished before elimination [2021-06-05 05:00:35,800 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:00:35,800 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:1125, output treesize:122 [2021-06-05 05:00:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:35,993 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473100247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:35,993 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:35,993 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:00:35,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413284385] [2021-06-05 05:00:35,993 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:00:35,993 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:35,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:00:35,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:00:35,994 INFO L87 Difference]: Start difference. First operand 305 states and 891 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:36,485 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 107 [2021-06-05 05:00:36,813 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 111 [2021-06-05 05:00:37,232 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 149 [2021-06-05 05:00:38,108 WARN L205 SmtUtils]: Spent 780.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 182 [2021-06-05 05:00:38,355 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2021-06-05 05:00:38,598 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2021-06-05 05:00:38,795 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2021-06-05 05:00:38,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:38,814 INFO L93 Difference]: Finished difference Result 512 states and 1450 transitions. [2021-06-05 05:00:38,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 05:00:38,814 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:38,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:38,815 INFO L225 Difference]: With dead ends: 512 [2021-06-05 05:00:38,815 INFO L226 Difference]: Without dead ends: 461 [2021-06-05 05:00:38,815 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 3520.3ms TimeCoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2021-06-05 05:00:38,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-06-05 05:00:38,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 302. [2021-06-05 05:00:38,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 2.9235880398671097) internal successors, (880), 301 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:38,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 880 transitions. [2021-06-05 05:00:38,819 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 880 transitions. Word has length 20 [2021-06-05 05:00:38,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:38,819 INFO L482 AbstractCegarLoop]: Abstraction has 302 states and 880 transitions. [2021-06-05 05:00:38,819 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:38,819 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 880 transitions. [2021-06-05 05:00:38,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:38,819 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:38,819 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:39,020 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2762 [2021-06-05 05:00:39,020 INFO L430 AbstractCegarLoop]: === Iteration 168 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:39,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:39,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1281321126, now seen corresponding path program 19 times [2021-06-05 05:00:39,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:39,021 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872364114] [2021-06-05 05:00:39,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:39,218 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:39,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872364114] [2021-06-05 05:00:39,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872364114] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:39,218 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797848305] [2021-06-05 05:00:39,218 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:39,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:00:39,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:39,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:39,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:39,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:39,746 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:39,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:39,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:39,752 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:39,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:39,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:39,758 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:40,034 WARN L205 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 101 [2021-06-05 05:00:40,034 INFO L628 ElimStorePlain]: treesize reduction 136, result has 71.5 percent of original size [2021-06-05 05:00:40,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:40,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:40,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:00:40,041 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:40,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:40,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:40,046 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:40,253 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 90 [2021-06-05 05:00:40,253 INFO L628 ElimStorePlain]: treesize reduction 27, result has 90.9 percent of original size [2021-06-05 05:00:40,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:40,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:40,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:40,259 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:40,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:40,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:00:40,264 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:40,366 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 05:00:40,366 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:40,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:40,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:40,371 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:40,464 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:40,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:40,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:40,470 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:40,562 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:40,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:40,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:40,567 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:40,655 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:40,661 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:00:40,661 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:561, output treesize:218 [2021-06-05 05:00:40,832 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 88 [2021-06-05 05:00:41,169 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 92 [2021-06-05 05:00:41,704 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_394, array_6], 1=[array_0, v_prenex_393]} [2021-06-05 05:00:41,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:41,709 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:41,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:00:41,713 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:41,717 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:41,717 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:41,721 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:41,721 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:41,725 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:41,725 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:41,729 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:41,729 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:41,862 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2021-06-05 05:00:41,863 INFO L628 ElimStorePlain]: treesize reduction 297, result has 30.1 percent of original size [2021-06-05 05:00:41,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:41,866 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:41,910 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:41,911 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:00:41,911 INFO L518 ElimStorePlain]: Eliminatee v_prenex_393 vanished before elimination [2021-06-05 05:00:41,912 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:00:41,912 INFO L247 ElimStorePlain]: Needed 8 recursive calls to eliminate 6 variables, input treesize:630, output treesize:105 [2021-06-05 05:00:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:42,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797848305] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:42,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:42,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:00:42,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789548605] [2021-06-05 05:00:42,044 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:00:42,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:42,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:00:42,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:00:42,045 INFO L87 Difference]: Start difference. First operand 302 states and 880 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:42,637 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 120 [2021-06-05 05:00:43,460 WARN L205 SmtUtils]: Spent 703.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 168 [2021-06-05 05:00:44,461 WARN L205 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 181 [2021-06-05 05:00:45,501 WARN L205 SmtUtils]: Spent 937.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 184 [2021-06-05 05:00:46,593 WARN L205 SmtUtils]: Spent 998.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 198 [2021-06-05 05:00:46,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:46,660 INFO L93 Difference]: Finished difference Result 644 states and 1786 transitions. [2021-06-05 05:00:46,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:00:46,660 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:46,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:46,661 INFO L225 Difference]: With dead ends: 644 [2021-06-05 05:00:46,661 INFO L226 Difference]: Without dead ends: 604 [2021-06-05 05:00:46,661 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 5175.0ms TimeCoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:00:46,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-06-05 05:00:46,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 309. [2021-06-05 05:00:46,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 2.9318181818181817) internal successors, (903), 308 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:46,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 903 transitions. [2021-06-05 05:00:46,666 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 903 transitions. Word has length 20 [2021-06-05 05:00:46,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:46,666 INFO L482 AbstractCegarLoop]: Abstraction has 309 states and 903 transitions. [2021-06-05 05:00:46,666 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:46,666 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 903 transitions. [2021-06-05 05:00:46,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:46,666 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:46,666 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:46,867 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2946 [2021-06-05 05:00:46,867 INFO L430 AbstractCegarLoop]: === Iteration 169 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:46,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:46,867 INFO L82 PathProgramCache]: Analyzing trace with hash 884403472, now seen corresponding path program 20 times [2021-06-05 05:00:46,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:46,867 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697157400] [2021-06-05 05:00:46,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:47,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:47,139 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:47,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697157400] [2021-06-05 05:00:47,139 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697157400] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:47,139 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359663626] [2021-06-05 05:00:47,139 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:47,171 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:00:47,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:47,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:00:47,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:47,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:47,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:47,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:00:47,691 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:47,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:47,696 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:47,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:47,697 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:47,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:47,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:47,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:00:47,704 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:47,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:47,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:47,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:47,711 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:47,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:47,716 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:47,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:00:47,717 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:47,722 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:47,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:00:47,723 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:48,048 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2021-06-05 05:00:48,049 INFO L628 ElimStorePlain]: treesize reduction 385, result has 48.3 percent of original size [2021-06-05 05:00:48,053 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:48,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:48,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:00:48,055 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:48,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:48,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:48,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:48,060 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:48,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:48,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:48,069 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:48,299 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2021-06-05 05:00:48,299 INFO L628 ElimStorePlain]: treesize reduction 30, result has 90.5 percent of original size [2021-06-05 05:00:48,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:48,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:48,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:48,304 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:48,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:48,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:48,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:48,309 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:48,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:48,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:00:48,313 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:48,423 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-05 05:00:48,424 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:48,430 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:00:48,430 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:949, output treesize:259 [2021-06-05 05:00:48,651 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2021-06-05 05:00:48,921 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2021-06-05 05:00:49,506 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_416, v_prenex_418, v_prenex_408, array_6, v_prenex_410, v_prenex_412, v_prenex_414], 1=[v_prenex_415, v_prenex_417, array_0, v_prenex_407, v_prenex_409, v_prenex_411, v_prenex_413]} [2021-06-05 05:00:49,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:49,520 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:49,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:49,534 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:49,546 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:00:49,547 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:49,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:00:49,561 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:49,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:49,575 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:49,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:49,590 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:50,123 WARN L205 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 111 [2021-06-05 05:00:50,124 INFO L628 ElimStorePlain]: treesize reduction 1611, result has 17.2 percent of original size [2021-06-05 05:00:50,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:00:50,130 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:50,255 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 05:00:50,255 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:50,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:50,262 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:50,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:00:50,267 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:50,486 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 94 [2021-06-05 05:00:50,486 INFO L628 ElimStorePlain]: treesize reduction 33, result has 88.9 percent of original size [2021-06-05 05:00:50,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:50,492 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:50,592 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:50,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:00:50,606 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:50,703 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:50,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:50,709 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:50,804 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:50,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:00:50,809 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:50,900 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:50,900 INFO L518 ElimStorePlain]: Eliminatee v_prenex_415 vanished before elimination [2021-06-05 05:00:50,900 INFO L518 ElimStorePlain]: Eliminatee v_prenex_417 vanished before elimination [2021-06-05 05:00:50,900 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:00:50,900 INFO L518 ElimStorePlain]: Eliminatee v_prenex_407 vanished before elimination [2021-06-05 05:00:50,901 INFO L518 ElimStorePlain]: Eliminatee v_prenex_409 vanished before elimination [2021-06-05 05:00:50,901 INFO L518 ElimStorePlain]: Eliminatee v_prenex_411 vanished before elimination [2021-06-05 05:00:50,901 INFO L518 ElimStorePlain]: Eliminatee v_prenex_413 vanished before elimination [2021-06-05 05:00:50,903 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 14 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 05:00:50,904 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 21 variables, input treesize:2091, output treesize:175 [2021-06-05 05:00:51,066 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-06-05 05:00:51,224 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-06-05 05:00:51,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:51,303 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359663626] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:51,303 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:51,303 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:00:51,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816828101] [2021-06-05 05:00:51,303 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:00:51,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:51,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:00:51,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:00:51,304 INFO L87 Difference]: Start difference. First operand 309 states and 903 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:51,946 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 132 [2021-06-05 05:00:52,596 WARN L205 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 166 [2021-06-05 05:00:53,600 WARN L205 SmtUtils]: Spent 849.00 ms on a formula simplification. DAG size of input: 207 DAG size of output: 180 [2021-06-05 05:00:54,679 WARN L205 SmtUtils]: Spent 985.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 185 [2021-06-05 05:00:55,905 WARN L205 SmtUtils]: Spent 1.06 s on a formula simplification. DAG size of input: 216 DAG size of output: 195 [2021-06-05 05:00:56,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:00:56,106 INFO L93 Difference]: Finished difference Result 647 states and 1820 transitions. [2021-06-05 05:00:56,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:00:56,106 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:00:56,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:00:56,107 INFO L225 Difference]: With dead ends: 647 [2021-06-05 05:00:56,107 INFO L226 Difference]: Without dead ends: 632 [2021-06-05 05:00:56,107 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 5528.6ms TimeCoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:00:56,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-06-05 05:00:56,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 309. [2021-06-05 05:00:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 2.9318181818181817) internal successors, (903), 308 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:56,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 903 transitions. [2021-06-05 05:00:56,114 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 903 transitions. Word has length 20 [2021-06-05 05:00:56,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:00:56,114 INFO L482 AbstractCegarLoop]: Abstraction has 309 states and 903 transitions. [2021-06-05 05:00:56,114 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:56,114 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 903 transitions. [2021-06-05 05:00:56,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:00:56,115 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:00:56,115 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:00:56,324 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3089 [2021-06-05 05:00:56,325 INFO L430 AbstractCegarLoop]: === Iteration 170 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:00:56,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:00:56,325 INFO L82 PathProgramCache]: Analyzing trace with hash -814316916, now seen corresponding path program 21 times [2021-06-05 05:00:56,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:00:56,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714751096] [2021-06-05 05:00:56,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:00:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:00:56,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:56,590 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:00:56,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714751096] [2021-06-05 05:00:56,590 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714751096] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:56,590 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493965390] [2021-06-05 05:00:56,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:00:56,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:00:56,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:00:56,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:00:56,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:00:56,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:56,905 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:56,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:56,906 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:56,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:56,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:56,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:56,912 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:56,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:56,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:56,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:56,917 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:56,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:56,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:56,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:56,923 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:56,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:56,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:56,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:00:56,928 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:56,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:56,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:00:56,933 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:57,183 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-06-05 05:00:57,183 INFO L628 ElimStorePlain]: treesize reduction 351, result has 43.7 percent of original size [2021-06-05 05:00:57,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:57,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:57,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:57,189 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:57,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:57,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:57,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:57,194 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:57,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:00:57,199 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:57,361 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2021-06-05 05:00:57,362 INFO L628 ElimStorePlain]: treesize reduction 27, result has 87.8 percent of original size [2021-06-05 05:00:57,368 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:57,369 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:57,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:57,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:57,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:57,375 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:57,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:00:57,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:00:57,379 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:57,508 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-06-05 05:00:57,508 INFO L628 ElimStorePlain]: treesize reduction 22, result has 86.8 percent of original size [2021-06-05 05:00:57,512 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2021-06-05 05:00:57,512 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:715, output treesize:127 [2021-06-05 05:00:58,218 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_437, v_prenex_427, v_prenex_429, array_6, v_prenex_431, v_prenex_443, v_prenex_433, v_prenex_435], 1=[v_prenex_426, v_prenex_438, v_prenex_428, array_0, v_prenex_430, v_prenex_432, v_prenex_434, v_prenex_436]} [2021-06-05 05:00:58,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:58,230 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:58,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:00:58,238 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:58,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:00:58,246 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:58,513 WARN L205 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 66 [2021-06-05 05:00:58,513 INFO L628 ElimStorePlain]: treesize reduction 567, result has 29.1 percent of original size [2021-06-05 05:00:58,513 INFO L518 ElimStorePlain]: Eliminatee v_prenex_427 vanished before elimination [2021-06-05 05:00:58,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:58,519 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:58,608 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:58,608 INFO L518 ElimStorePlain]: Eliminatee array_6 vanished before elimination [2021-06-05 05:00:58,608 INFO L518 ElimStorePlain]: Eliminatee v_prenex_431 vanished before elimination [2021-06-05 05:00:58,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:58,612 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:58,698 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:58,698 INFO L518 ElimStorePlain]: Eliminatee v_prenex_433 vanished before elimination [2021-06-05 05:00:58,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:00:58,703 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:00:58,786 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:00:58,786 INFO L518 ElimStorePlain]: Eliminatee v_prenex_426 vanished before elimination [2021-06-05 05:00:58,786 INFO L518 ElimStorePlain]: Eliminatee v_prenex_438 vanished before elimination [2021-06-05 05:00:58,787 INFO L518 ElimStorePlain]: Eliminatee v_prenex_428 vanished before elimination [2021-06-05 05:00:58,787 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:00:58,787 INFO L518 ElimStorePlain]: Eliminatee v_prenex_430 vanished before elimination [2021-06-05 05:00:58,787 INFO L518 ElimStorePlain]: Eliminatee v_prenex_432 vanished before elimination [2021-06-05 05:00:58,787 INFO L518 ElimStorePlain]: Eliminatee v_prenex_434 vanished before elimination [2021-06-05 05:00:58,787 INFO L518 ElimStorePlain]: Eliminatee v_prenex_436 vanished before elimination [2021-06-05 05:00:58,790 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 16 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 05:00:58,790 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 24 variables, input treesize:883, output treesize:188 [2021-06-05 05:00:58,930 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-06-05 05:00:59,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:00:59,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493965390] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:00:59,135 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:00:59,135 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:00:59,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591010256] [2021-06-05 05:00:59,135 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:00:59,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:00:59,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:00:59,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:00:59,135 INFO L87 Difference]: Start difference. First operand 309 states and 903 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:00:59,644 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 96 [2021-06-05 05:01:00,328 WARN L205 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 113 [2021-06-05 05:01:00,952 WARN L205 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 122 [2021-06-05 05:01:01,973 WARN L205 SmtUtils]: Spent 944.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 138 [2021-06-05 05:01:03,086 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 169 DAG size of output: 147 [2021-06-05 05:01:03,975 WARN L205 SmtUtils]: Spent 819.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 129 [2021-06-05 05:01:04,914 WARN L205 SmtUtils]: Spent 876.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 135 [2021-06-05 05:01:05,954 WARN L205 SmtUtils]: Spent 984.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 141 [2021-06-05 05:01:06,923 WARN L205 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 135 [2021-06-05 05:01:06,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:06,924 INFO L93 Difference]: Finished difference Result 704 states and 1965 transitions. [2021-06-05 05:01:06,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 05:01:06,924 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:01:06,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:06,925 INFO L225 Difference]: With dead ends: 704 [2021-06-05 05:01:06,925 INFO L226 Difference]: Without dead ends: 659 [2021-06-05 05:01:06,925 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 8261.5ms TimeCoverageRelationStatistics Valid=181, Invalid=689, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:01:06,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-06-05 05:01:06,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 332. [2021-06-05 05:01:06,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 3.0060422960725077) internal successors, (995), 331 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:06,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 995 transitions. [2021-06-05 05:01:06,932 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 995 transitions. Word has length 20 [2021-06-05 05:01:06,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:06,932 INFO L482 AbstractCegarLoop]: Abstraction has 332 states and 995 transitions. [2021-06-05 05:01:06,932 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:06,933 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 995 transitions. [2021-06-05 05:01:06,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:01:06,933 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:06,933 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:07,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3302,49 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:07,156 INFO L430 AbstractCegarLoop]: === Iteration 171 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:07,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:07,156 INFO L82 PathProgramCache]: Analyzing trace with hash -809196446, now seen corresponding path program 22 times [2021-06-05 05:01:07,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:07,156 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457816134] [2021-06-05 05:01:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:07,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:07,344 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:07,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457816134] [2021-06-05 05:01:07,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457816134] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:07,344 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357729245] [2021-06-05 05:01:07,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:07,388 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:01:07,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:07,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:01:07,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:07,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:07,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:07,894 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:08,240 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 109 [2021-06-05 05:01:08,241 INFO L628 ElimStorePlain]: treesize reduction 209, result has 64.6 percent of original size [2021-06-05 05:01:08,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:08,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:08,247 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:08,399 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 05:01:08,399 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:08,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:08,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:08,405 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:08,554 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 05:01:08,554 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:08,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:08,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:08,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:01:08,561 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:08,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:08,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:08,566 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:08,709 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 05:01:08,709 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:08,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:08,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:08,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:01:08,716 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:08,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:08,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:08,722 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:08,951 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2021-06-05 05:01:08,951 INFO L628 ElimStorePlain]: treesize reduction 30, result has 90.1 percent of original size [2021-06-05 05:01:08,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:08,956 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:08,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:08,957 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:08,961 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:08,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:01:08,962 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:09,068 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 05:01:09,069 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:09,074 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:01:09,075 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:597, output treesize:252 [2021-06-05 05:01:09,267 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2021-06-05 05:01:09,779 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_460, v_prenex_462, array_6, v_prenex_464, v_prenex_466, v_prenex_458], 1=[v_prenex_459, array_0, v_prenex_461, v_prenex_463, v_prenex_465, v_prenex_457]} [2021-06-05 05:01:09,787 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:09,788 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:09,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:09,797 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:09,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:09,808 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:09,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:01:09,816 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:09,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:09,825 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:09,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:09,839 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:10,277 WARN L205 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 102 [2021-06-05 05:01:10,277 INFO L628 ElimStorePlain]: treesize reduction 1432, result has 17.2 percent of original size [2021-06-05 05:01:10,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:01:10,283 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:10,404 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-05 05:01:10,404 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:10,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:01:10,410 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:10,526 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-05 05:01:10,526 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:10,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:01:10,532 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:10,537 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:10,537 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:10,634 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:10,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:01:10,639 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:10,733 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:10,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:01:10,738 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:10,829 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:10,829 INFO L518 ElimStorePlain]: Eliminatee v_prenex_459 vanished before elimination [2021-06-05 05:01:10,829 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:01:10,829 INFO L518 ElimStorePlain]: Eliminatee v_prenex_461 vanished before elimination [2021-06-05 05:01:10,829 INFO L518 ElimStorePlain]: Eliminatee v_prenex_463 vanished before elimination [2021-06-05 05:01:10,829 INFO L518 ElimStorePlain]: Eliminatee v_prenex_465 vanished before elimination [2021-06-05 05:01:10,830 INFO L518 ElimStorePlain]: Eliminatee v_prenex_457 vanished before elimination [2021-06-05 05:01:10,832 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:01:10,832 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1851, output treesize:198 [2021-06-05 05:01:11,001 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-06-05 05:01:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:11,218 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357729245] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:11,218 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:11,218 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:01:11,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328443844] [2021-06-05 05:01:11,218 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:01:11,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:11,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:01:11,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:01:11,218 INFO L87 Difference]: Start difference. First operand 332 states and 995 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:11,773 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 123 [2021-06-05 05:01:12,513 WARN L205 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 135 [2021-06-05 05:01:13,238 WARN L205 SmtUtils]: Spent 608.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 137 [2021-06-05 05:01:14,056 WARN L205 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 149 [2021-06-05 05:01:14,934 WARN L205 SmtUtils]: Spent 781.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 154 [2021-06-05 05:01:15,720 WARN L205 SmtUtils]: Spent 729.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 147 [2021-06-05 05:01:16,600 WARN L205 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 157 [2021-06-05 05:01:17,558 WARN L205 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 162 [2021-06-05 05:01:18,420 WARN L205 SmtUtils]: Spent 799.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 154 [2021-06-05 05:01:18,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:18,466 INFO L93 Difference]: Finished difference Result 680 states and 1901 transitions. [2021-06-05 05:01:18,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 05:01:18,467 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:01:18,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:18,468 INFO L225 Difference]: With dead ends: 680 [2021-06-05 05:01:18,468 INFO L226 Difference]: Without dead ends: 650 [2021-06-05 05:01:18,468 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 7778.9ms TimeCoverageRelationStatistics Valid=180, Invalid=690, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:01:18,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-06-05 05:01:18,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 340. [2021-06-05 05:01:18,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 339 states have (on average 3.023598820058997) internal successors, (1025), 339 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:18,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 1025 transitions. [2021-06-05 05:01:18,473 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 1025 transitions. Word has length 20 [2021-06-05 05:01:18,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:18,473 INFO L482 AbstractCegarLoop]: Abstraction has 340 states and 1025 transitions. [2021-06-05 05:01:18,473 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:18,473 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 1025 transitions. [2021-06-05 05:01:18,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:01:18,474 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:18,474 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:18,692 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3396 [2021-06-05 05:01:18,693 INFO L430 AbstractCegarLoop]: === Iteration 172 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:18,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:18,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1859986214, now seen corresponding path program 23 times [2021-06-05 05:01:18,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:18,693 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335171053] [2021-06-05 05:01:18,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:18,897 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:18,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335171053] [2021-06-05 05:01:18,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335171053] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:18,897 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048405531] [2021-06-05 05:01:18,897 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:18,941 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 05:01:18,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:18,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:01:18,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:19,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:19,073 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:01:19,077 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:19,081 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:19,086 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:01:19,090 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 05:01:19,094 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:19,098 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:19,105 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:01:19,110 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:19,114 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:01:19,121 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:19,126 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:19,131 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:01:19,135 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:01:19,139 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:01:19,143 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,147 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:01:19,147 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:19,152 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:01:19,156 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:01:19,160 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:19,164 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2021-06-05 05:01:19,168 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:19,172 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:01:19,176 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,179 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:19,180 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:19,184 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:01:19,188 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:19,192 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:19,196 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:01:19,200 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:01:19,203 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:19,208 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:01:19,212 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:01:19,223 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:01:19,226 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:01:19,230 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:19,336 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 30 [2021-06-05 05:01:19,337 INFO L628 ElimStorePlain]: treesize reduction 330, result has 23.8 percent of original size [2021-06-05 05:01:19,338 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-06-05 05:01:19,338 INFO L247 ElimStorePlain]: Needed 37 recursive calls to eliminate 1 variables, input treesize:1477, output treesize:103 [2021-06-05 05:01:19,814 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:19,814 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048405531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:19,814 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:19,814 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 05:01:19,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217519590] [2021-06-05 05:01:19,814 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:01:19,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:19,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:01:19,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:01:19,815 INFO L87 Difference]: Start difference. First operand 340 states and 1025 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:20,234 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 48 [2021-06-05 05:01:20,499 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2021-06-05 05:01:20,819 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2021-06-05 05:01:21,286 WARN L205 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2021-06-05 05:01:21,766 WARN L205 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 92 [2021-06-05 05:01:21,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:21,823 INFO L93 Difference]: Finished difference Result 690 states and 1988 transitions. [2021-06-05 05:01:21,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:01:21,824 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:01:21,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:21,824 INFO L225 Difference]: With dead ends: 690 [2021-06-05 05:01:21,825 INFO L226 Difference]: Without dead ends: 675 [2021-06-05 05:01:21,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2304.4ms TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:01:21,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2021-06-05 05:01:21,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 347. [2021-06-05 05:01:21,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 3.0491329479768785) internal successors, (1055), 346 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1055 transitions. [2021-06-05 05:01:21,829 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1055 transitions. Word has length 20 [2021-06-05 05:01:21,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:21,829 INFO L482 AbstractCegarLoop]: Abstraction has 347 states and 1055 transitions. [2021-06-05 05:01:21,829 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:21,830 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1055 transitions. [2021-06-05 05:01:21,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:01:21,830 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:21,830 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:22,030 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3548,51 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:22,031 INFO L430 AbstractCegarLoop]: === Iteration 173 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:22,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:22,031 INFO L82 PathProgramCache]: Analyzing trace with hash 246419480, now seen corresponding path program 24 times [2021-06-05 05:01:22,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:22,031 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306445386] [2021-06-05 05:01:22,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:22,215 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:22,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306445386] [2021-06-05 05:01:22,215 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306445386] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:22,215 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947594135] [2021-06-05 05:01:22,216 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:22,254 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 05:01:22,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:22,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:01:22,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:22,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:22,659 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:22,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:22,665 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:22,669 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:22,671 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:22,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:22,676 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:22,680 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:01:22,682 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:22,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:22,687 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:22,886 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2021-06-05 05:01:22,887 INFO L628 ElimStorePlain]: treesize reduction 346, result has 40.0 percent of original size [2021-06-05 05:01:22,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,890 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:22,891 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:22,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:22,896 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:22,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:01:22,900 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:22,979 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:22,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:01:22,983 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:22,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:22,988 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:22,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:22,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:22,992 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:23,117 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2021-06-05 05:01:23,117 INFO L628 ElimStorePlain]: treesize reduction 22, result has 87.4 percent of original size [2021-06-05 05:01:23,122 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2021-06-05 05:01:23,122 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:715, output treesize:135 [2021-06-05 05:01:23,252 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2021-06-05 05:01:24,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:24,156 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947594135] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:24,156 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:24,156 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:01:24,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910614075] [2021-06-05 05:01:24,156 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:01:24,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:24,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:01:24,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:01:24,157 INFO L87 Difference]: Start difference. First operand 347 states and 1055 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:24,663 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 76 [2021-06-05 05:01:25,009 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 81 [2021-06-05 05:01:25,201 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2021-06-05 05:01:25,475 WARN L205 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 83 [2021-06-05 05:01:25,828 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 92 [2021-06-05 05:01:26,085 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2021-06-05 05:01:26,438 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 92 [2021-06-05 05:01:26,917 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 105 [2021-06-05 05:01:27,255 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 91 [2021-06-05 05:01:27,663 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 97 [2021-06-05 05:01:28,183 WARN L205 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 110 [2021-06-05 05:01:28,461 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2021-06-05 05:01:28,900 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 103 [2021-06-05 05:01:29,494 WARN L205 SmtUtils]: Spent 522.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 117 [2021-06-05 05:01:29,801 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 101 [2021-06-05 05:01:29,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:29,848 INFO L93 Difference]: Finished difference Result 753 states and 2165 transitions. [2021-06-05 05:01:29,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:01:29,849 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:01:29,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:29,850 INFO L225 Difference]: With dead ends: 753 [2021-06-05 05:01:29,850 INFO L226 Difference]: Without dead ends: 723 [2021-06-05 05:01:29,850 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 5953.5ms TimeCoverageRelationStatistics Valid=245, Invalid=1015, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 05:01:29,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-06-05 05:01:29,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 347. [2021-06-05 05:01:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 346 states have (on average 3.0491329479768785) internal successors, (1055), 346 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:29,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 1055 transitions. [2021-06-05 05:01:29,856 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 1055 transitions. Word has length 20 [2021-06-05 05:01:29,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:29,856 INFO L482 AbstractCegarLoop]: Abstraction has 347 states and 1055 transitions. [2021-06-05 05:01:29,856 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:29,857 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 1055 transitions. [2021-06-05 05:01:29,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:01:29,857 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:29,857 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:30,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3595 [2021-06-05 05:01:30,079 INFO L430 AbstractCegarLoop]: === Iteration 174 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:30,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:30,079 INFO L82 PathProgramCache]: Analyzing trace with hash -492920346, now seen corresponding path program 25 times [2021-06-05 05:01:30,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:30,079 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984565351] [2021-06-05 05:01:30,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:30,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:30,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:30,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984565351] [2021-06-05 05:01:30,249 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984565351] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:30,250 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456653054] [2021-06-05 05:01:30,250 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:30,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:01:30,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:30,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:30,804 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:30,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:30,805 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:30,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:30,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:30,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:01:30,811 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:30,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:30,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:30,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:30,816 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:30,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:30,821 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:30,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:30,822 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:30,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:30,827 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:30,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:30,828 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:30,832 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:30,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:30,834 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:31,140 WARN L205 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 05:01:31,140 INFO L628 ElimStorePlain]: treesize reduction 374, result has 48.7 percent of original size [2021-06-05 05:01:31,144 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:31,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:31,145 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:01:31,146 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:31,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:31,150 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:31,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:31,151 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:31,155 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:31,155 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:31,252 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:31,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:31,256 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:31,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:31,257 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:31,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:31,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:31,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:31,262 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:31,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:31,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:01:31,267 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:31,360 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:31,365 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:01:31,366 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:895, output treesize:217 [2021-06-05 05:01:31,858 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_490, v_prenex_492, v_prenex_484, array_6, v_prenex_486, v_prenex_488], 1=[array_0, v_prenex_491, v_prenex_483, v_prenex_485, v_prenex_487, v_prenex_489]} [2021-06-05 05:01:31,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:31,867 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:31,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:31,874 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:31,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:31,882 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:31,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:31,890 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:31,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:01:31,898 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:31,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:31,906 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:32,302 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 92 [2021-06-05 05:01:32,302 INFO L628 ElimStorePlain]: treesize reduction 1320, result has 16.9 percent of original size [2021-06-05 05:01:32,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:01:32,308 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:32,416 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-05 05:01:32,416 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:32,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:01:32,421 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:32,530 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 05:01:32,530 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:32,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:01:32,536 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:32,642 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 05:01:32,642 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:32,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:01:32,648 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:32,752 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 05:01:32,752 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:32,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-06-05 05:01:32,757 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:32,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:01:32,762 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:32,932 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-06-05 05:01:32,932 INFO L628 ElimStorePlain]: treesize reduction 27, result has 87.4 percent of original size [2021-06-05 05:01:32,932 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:01:32,933 INFO L518 ElimStorePlain]: Eliminatee v_prenex_491 vanished before elimination [2021-06-05 05:01:32,933 INFO L518 ElimStorePlain]: Eliminatee v_prenex_483 vanished before elimination [2021-06-05 05:01:32,933 INFO L518 ElimStorePlain]: Eliminatee v_prenex_485 vanished before elimination [2021-06-05 05:01:32,933 INFO L518 ElimStorePlain]: Eliminatee v_prenex_487 vanished before elimination [2021-06-05 05:01:32,933 INFO L518 ElimStorePlain]: Eliminatee v_prenex_489 vanished before elimination [2021-06-05 05:01:32,935 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:01:32,935 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1703, output treesize:140 [2021-06-05 05:01:33,073 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-06-05 05:01:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:33,372 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456653054] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:33,372 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:33,372 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:01:33,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141587863] [2021-06-05 05:01:33,373 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:01:33,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:33,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:01:33,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:01:33,373 INFO L87 Difference]: Start difference. First operand 347 states and 1055 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:34,062 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 114 [2021-06-05 05:01:34,592 WARN L205 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 116 [2021-06-05 05:01:35,101 WARN L205 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 116 [2021-06-05 05:01:35,701 WARN L205 SmtUtils]: Spent 487.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 122 [2021-06-05 05:01:36,294 WARN L205 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 127 [2021-06-05 05:01:36,962 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 133 [2021-06-05 05:01:37,633 WARN L205 SmtUtils]: Spent 593.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 132 [2021-06-05 05:01:38,351 WARN L205 SmtUtils]: Spent 640.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 138 [2021-06-05 05:01:38,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:38,432 INFO L93 Difference]: Finished difference Result 819 states and 2321 transitions. [2021-06-05 05:01:38,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:01:38,432 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:01:38,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:38,433 INFO L225 Difference]: With dead ends: 819 [2021-06-05 05:01:38,433 INFO L226 Difference]: Without dead ends: 789 [2021-06-05 05:01:38,433 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 5305.9ms TimeCoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:01:38,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2021-06-05 05:01:38,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 351. [2021-06-05 05:01:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 3.0714285714285716) internal successors, (1075), 350 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 1075 transitions. [2021-06-05 05:01:38,438 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 1075 transitions. Word has length 20 [2021-06-05 05:01:38,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:38,438 INFO L482 AbstractCegarLoop]: Abstraction has 351 states and 1075 transitions. [2021-06-05 05:01:38,439 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:38,439 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 1075 transitions. [2021-06-05 05:01:38,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:01:38,439 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:38,439 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:38,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3766,53 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:38,640 INFO L430 AbstractCegarLoop]: === Iteration 175 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:38,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:38,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1711555706, now seen corresponding path program 26 times [2021-06-05 05:01:38,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:38,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967792598] [2021-06-05 05:01:38,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:38,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:38,829 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:38,829 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:38,829 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967792598] [2021-06-05 05:01:38,830 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967792598] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:38,830 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151517155] [2021-06-05 05:01:38,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:38,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:01:38,869 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:38,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:01:38,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:39,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:01:39,327 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:39,331 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,332 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:39,333 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:39,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,337 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:39,338 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:39,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,343 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:39,344 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:39,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:39,350 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:39,354 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:39,355 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:39,649 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2021-06-05 05:01:39,650 INFO L628 ElimStorePlain]: treesize reduction 448, result has 43.1 percent of original size [2021-06-05 05:01:39,653 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:39,655 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:39,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,659 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:39,660 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:39,664 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:01:39,665 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:39,895 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2021-06-05 05:01:39,895 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.7 percent of original size [2021-06-05 05:01:39,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:39,900 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:39,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,904 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:39,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:39,906 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:39,909 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:39,909 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,000 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:40,006 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:01:40,006 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:895, output treesize:217 [2021-06-05 05:01:40,482 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_503, v_prenex_505, v_prenex_507, v_prenex_509, array_6, v_prenex_511], 1=[v_prenex_504, v_prenex_506, array_0, v_prenex_508, v_prenex_510, v_prenex_502]} [2021-06-05 05:01:40,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:40,490 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:40,498 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:01:40,506 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:40,513 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:01:40,521 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:40,539 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:40,916 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 94 [2021-06-05 05:01:40,917 INFO L628 ElimStorePlain]: treesize reduction 1320, result has 16.9 percent of original size [2021-06-05 05:01:40,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:01:40,922 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,029 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-05 05:01:41,029 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:41,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:01:41,035 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,039 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:41,039 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,130 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:41,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:01:41,135 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,222 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:41,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:01:41,227 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,312 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:41,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:01:41,316 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:41,398 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:41,398 INFO L518 ElimStorePlain]: Eliminatee v_prenex_504 vanished before elimination [2021-06-05 05:01:41,398 INFO L518 ElimStorePlain]: Eliminatee v_prenex_506 vanished before elimination [2021-06-05 05:01:41,398 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:01:41,398 INFO L518 ElimStorePlain]: Eliminatee v_prenex_508 vanished before elimination [2021-06-05 05:01:41,398 INFO L518 ElimStorePlain]: Eliminatee v_prenex_510 vanished before elimination [2021-06-05 05:01:41,398 INFO L518 ElimStorePlain]: Eliminatee v_prenex_502 vanished before elimination [2021-06-05 05:01:41,401 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:01:41,401 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1703, output treesize:140 [2021-06-05 05:01:41,540 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-06-05 05:01:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:41,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151517155] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:41,828 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:41,828 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:01:41,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266843265] [2021-06-05 05:01:41,829 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:01:41,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:41,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:01:41,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:01:41,829 INFO L87 Difference]: Start difference. First operand 351 states and 1075 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:42,362 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 116 [2021-06-05 05:01:42,778 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 121 [2021-06-05 05:01:43,296 WARN L205 SmtUtils]: Spent 458.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 120 [2021-06-05 05:01:43,917 WARN L205 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 129 [2021-06-05 05:01:44,539 WARN L205 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 129 [2021-06-05 05:01:45,240 WARN L205 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 138 [2021-06-05 05:01:45,943 WARN L205 SmtUtils]: Spent 623.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 137 [2021-06-05 05:01:46,705 WARN L205 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 146 [2021-06-05 05:01:46,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:46,773 INFO L93 Difference]: Finished difference Result 811 states and 2288 transitions. [2021-06-05 05:01:46,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:01:46,774 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:01:46,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:46,775 INFO L225 Difference]: With dead ends: 811 [2021-06-05 05:01:46,775 INFO L226 Difference]: Without dead ends: 781 [2021-06-05 05:01:46,775 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 5248.3ms TimeCoverageRelationStatistics Valid=167, Invalid=645, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:01:46,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-06-05 05:01:46,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 351. [2021-06-05 05:01:46,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 3.0714285714285716) internal successors, (1075), 350 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:46,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 1075 transitions. [2021-06-05 05:01:46,780 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 1075 transitions. Word has length 20 [2021-06-05 05:01:46,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:46,781 INFO L482 AbstractCegarLoop]: Abstraction has 351 states and 1075 transitions. [2021-06-05 05:01:46,781 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:46,781 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 1075 transitions. [2021-06-05 05:01:46,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:01:46,781 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:46,781 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:46,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3941 [2021-06-05 05:01:46,982 INFO L430 AbstractCegarLoop]: === Iteration 176 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:46,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:46,982 INFO L82 PathProgramCache]: Analyzing trace with hash 496140202, now seen corresponding path program 27 times [2021-06-05 05:01:46,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:46,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249641526] [2021-06-05 05:01:46,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:47,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:47,207 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:47,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249641526] [2021-06-05 05:01:47,207 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249641526] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:47,207 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110942032] [2021-06-05 05:01:47,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:47,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:01:47,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:47,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:01:47,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:47,899 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:01:47,901 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,907 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:01:47,908 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,914 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:47,915 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,920 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:01:47,922 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,927 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:01:47,929 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:47,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:47,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:47,934 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,254 WARN L205 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2021-06-05 05:01:48,254 INFO L628 ElimStorePlain]: treesize reduction 403, result has 46.1 percent of original size [2021-06-05 05:01:48,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:48,259 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:48,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:48,260 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:48,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:48,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:48,266 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,269 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:48,270 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,383 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2021-06-05 05:01:48,383 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:48,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:48,387 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:48,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:01:48,388 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:48,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:48,392 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:48,393 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:48,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:48,397 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:48,503 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-05 05:01:48,504 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:48,509 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:01:48,510 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:949, output treesize:251 [2021-06-05 05:01:48,707 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2021-06-05 05:01:49,067 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_526, v_prenex_528, array_6, v_prenex_530, v_prenex_522, v_prenex_524], 1=[v_prenex_525, v_prenex_527, array_0, v_prenex_529, v_prenex_521, v_prenex_523]} [2021-06-05 05:01:49,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:49,075 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:49,084 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:49,092 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:01:49,101 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:01:49,112 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:49,120 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-06-05 05:01:49,537 WARN L205 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 98 [2021-06-05 05:01:49,537 INFO L628 ElimStorePlain]: treesize reduction 1435, result has 15.2 percent of original size [2021-06-05 05:01:49,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:01:49,544 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,650 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-06-05 05:01:49,650 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:49,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:01:49,656 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,759 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-05 05:01:49,760 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:49,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:01:49,765 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,872 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 05:01:49,872 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:49,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:01:49,878 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:49,977 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:49,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:01:49,982 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:50,077 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:50,077 INFO L518 ElimStorePlain]: Eliminatee v_prenex_525 vanished before elimination [2021-06-05 05:01:50,077 INFO L518 ElimStorePlain]: Eliminatee v_prenex_527 vanished before elimination [2021-06-05 05:01:50,077 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:01:50,077 INFO L518 ElimStorePlain]: Eliminatee v_prenex_529 vanished before elimination [2021-06-05 05:01:50,078 INFO L518 ElimStorePlain]: Eliminatee v_prenex_521 vanished before elimination [2021-06-05 05:01:50,078 INFO L518 ElimStorePlain]: Eliminatee v_prenex_523 vanished before elimination [2021-06-05 05:01:50,080 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:01:50,080 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 18 variables, input treesize:1817, output treesize:194 [2021-06-05 05:01:50,246 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-06-05 05:01:50,471 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2021-06-05 05:01:50,659 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:50,659 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110942032] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:50,659 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:01:50,659 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:01:50,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419276355] [2021-06-05 05:01:50,660 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:01:50,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:01:50,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:01:50,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:01:50,660 INFO L87 Difference]: Start difference. First operand 351 states and 1075 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:51,232 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 123 [2021-06-05 05:01:51,787 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 128 [2021-06-05 05:01:51,950 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2021-06-05 05:01:52,343 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 143 [2021-06-05 05:01:52,549 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2021-06-05 05:01:52,951 WARN L205 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 136 [2021-06-05 05:01:53,629 WARN L205 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 146 [2021-06-05 05:01:53,835 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 71 [2021-06-05 05:01:54,474 WARN L205 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 136 [2021-06-05 05:01:55,175 WARN L205 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 149 [2021-06-05 05:01:55,916 WARN L205 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 154 [2021-06-05 05:01:56,114 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2021-06-05 05:01:56,811 WARN L205 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 143 [2021-06-05 05:01:57,570 WARN L205 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 157 [2021-06-05 05:01:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:01:57,647 INFO L93 Difference]: Finished difference Result 1047 states and 2889 transitions. [2021-06-05 05:01:57,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:01:57,647 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:01:57,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:01:57,649 INFO L225 Difference]: With dead ends: 1047 [2021-06-05 05:01:57,649 INFO L226 Difference]: Without dead ends: 975 [2021-06-05 05:01:57,649 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 7508.5ms TimeCoverageRelationStatistics Valid=258, Invalid=1002, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 05:01:57,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2021-06-05 05:01:57,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 353. [2021-06-05 05:01:57,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 3.0880681818181817) internal successors, (1087), 352 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:57,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 1087 transitions. [2021-06-05 05:01:57,655 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 1087 transitions. Word has length 20 [2021-06-05 05:01:57,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:01:57,655 INFO L482 AbstractCegarLoop]: Abstraction has 353 states and 1087 transitions. [2021-06-05 05:01:57,655 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:01:57,655 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 1087 transitions. [2021-06-05 05:01:57,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:01:57,655 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:01:57,655 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:01:57,856 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4101 [2021-06-05 05:01:57,856 INFO L430 AbstractCegarLoop]: === Iteration 177 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:01:57,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:01:57,856 INFO L82 PathProgramCache]: Analyzing trace with hash -690985846, now seen corresponding path program 28 times [2021-06-05 05:01:57,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:01:57,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048577478] [2021-06-05 05:01:57,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:01:57,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:01:58,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:01:58,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:01:58,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048577478] [2021-06-05 05:01:58,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048577478] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:01:58,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987197441] [2021-06-05 05:01:58,170 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:01:58,204 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:01:58,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:01:58,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:01:58,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:01:58,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:58,691 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:58,699 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:58,704 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:58,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:01:58,705 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,032 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 109 [2021-06-05 05:01:59,033 INFO L628 ElimStorePlain]: treesize reduction 194, result has 65.8 percent of original size [2021-06-05 05:01:59,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:59,038 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,188 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 05:01:59,188 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:59,193 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:59,194 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,342 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 05:01:59,342 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:59,347 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:59,348 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,494 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-05 05:01:59,494 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:59,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,499 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:01:59,500 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,505 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:01:59,506 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,638 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 05:01:59,638 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:59,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,643 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:01:59,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:01:59,644 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,648 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:01:59,649 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:01:59,756 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 05:01:59,757 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:01:59,763 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:01:59,763 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:597, output treesize:252 [2021-06-05 05:01:59,959 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2021-06-05 05:02:00,303 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_547, v_prenex_549, v_prenex_551, array_6, v_prenex_553, v_prenex_545], 1=[v_prenex_548, array_0, v_prenex_550, v_prenex_552, v_prenex_544, v_prenex_546]} [2021-06-05 05:02:00,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:00,312 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:00,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:00,320 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:00,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:00,328 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:00,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:00,337 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:00,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:00,345 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:00,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:00,353 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:00,810 WARN L205 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 101 [2021-06-05 05:02:00,811 INFO L628 ElimStorePlain]: treesize reduction 1373, result has 17.6 percent of original size [2021-06-05 05:02:00,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:00,817 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:00,821 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:00,822 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:00,927 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-05 05:02:00,928 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:00,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:00,937 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:01,041 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-05 05:02:01,041 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:01,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:01,046 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:01,149 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 05:02:01,149 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:01,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:02:01,154 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:01,254 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:01,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:01,259 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:01,356 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:01,356 INFO L518 ElimStorePlain]: Eliminatee v_prenex_548 vanished before elimination [2021-06-05 05:02:01,356 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:02:01,356 INFO L518 ElimStorePlain]: Eliminatee v_prenex_550 vanished before elimination [2021-06-05 05:02:01,356 INFO L518 ElimStorePlain]: Eliminatee v_prenex_552 vanished before elimination [2021-06-05 05:02:01,356 INFO L518 ElimStorePlain]: Eliminatee v_prenex_544 vanished before elimination [2021-06-05 05:02:01,356 INFO L518 ElimStorePlain]: Eliminatee v_prenex_546 vanished before elimination [2021-06-05 05:02:01,360 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:02:01,360 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1817, output treesize:194 [2021-06-05 05:02:01,527 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-06-05 05:02:01,696 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-06-05 05:02:01,913 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:01,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987197441] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:01,913 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:01,913 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:02:01,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913930732] [2021-06-05 05:02:01,914 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:02:01,914 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:01,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:02:01,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:02:01,914 INFO L87 Difference]: Start difference. First operand 353 states and 1087 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:02,503 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 131 [2021-06-05 05:02:02,969 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 136 [2021-06-05 05:02:03,372 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 141 [2021-06-05 05:02:03,759 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 114 [2021-06-05 05:02:04,438 WARN L205 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 150 [2021-06-05 05:02:05,039 WARN L205 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 125 [2021-06-05 05:02:05,812 WARN L205 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 160 [2021-06-05 05:02:06,480 WARN L205 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 135 [2021-06-05 05:02:06,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:06,533 INFO L93 Difference]: Finished difference Result 820 states and 2303 transitions. [2021-06-05 05:02:06,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:02:06,533 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:02:06,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:06,534 INFO L225 Difference]: With dead ends: 820 [2021-06-05 05:02:06,534 INFO L226 Difference]: Without dead ends: 790 [2021-06-05 05:02:06,535 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 5254.4ms TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:02:06,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-06-05 05:02:06,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 353. [2021-06-05 05:02:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 3.0880681818181817) internal successors, (1087), 352 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 1087 transitions. [2021-06-05 05:02:06,540 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 1087 transitions. Word has length 20 [2021-06-05 05:02:06,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:06,540 INFO L482 AbstractCegarLoop]: Abstraction has 353 states and 1087 transitions. [2021-06-05 05:02:06,540 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 1087 transitions. [2021-06-05 05:02:06,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:02:06,540 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:06,540 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:06,741 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4288 [2021-06-05 05:02:06,741 INFO L430 AbstractCegarLoop]: === Iteration 178 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:06,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:06,741 INFO L82 PathProgramCache]: Analyzing trace with hash 341702684, now seen corresponding path program 29 times [2021-06-05 05:02:06,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:06,741 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523614729] [2021-06-05 05:02:06,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:06,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:06,912 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:06,912 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523614729] [2021-06-05 05:02:06,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523614729] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:06,913 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914146417] [2021-06-05 05:02:06,913 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:06,940 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:02:06,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:06,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:02:06,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:07,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:07,078 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:07,083 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:02:07,087 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:07,092 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:07,097 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:07,101 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:02:07,106 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:07,111 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-06-05 05:02:07,116 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:07,121 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:07,125 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:07,130 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:07,135 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:07,139 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:07,144 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,148 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:02:07,149 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:07,153 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:02:07,158 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:02:07,163 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:02:07,168 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:02:07,173 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:07,177 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:02:07,181 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:02:07,186 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:02:07,191 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 05:02:07,195 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 05:02:07,200 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:07,205 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:07,210 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2021-06-05 05:02:07,215 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:07,220 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,224 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:07,224 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:07,229 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:02:07,233 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:07,238 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:07,242 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:07,418 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 38 [2021-06-05 05:02:07,419 INFO L628 ElimStorePlain]: treesize reduction 380, result has 32.9 percent of original size [2021-06-05 05:02:07,420 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:02:07,420 INFO L247 ElimStorePlain]: Needed 37 recursive calls to eliminate 1 variables, input treesize:1873, output treesize:186 [2021-06-05 05:02:07,848 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2021-06-05 05:02:08,024 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-06-05 05:02:08,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:08,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914146417] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:08,202 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:08,202 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 05:02:08,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869702476] [2021-06-05 05:02:08,202 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:02:08,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:08,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:02:08,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:02:08,203 INFO L87 Difference]: Start difference. First operand 353 states and 1087 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:08,697 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2021-06-05 05:02:09,086 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 62 [2021-06-05 05:02:09,564 WARN L205 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 81 [2021-06-05 05:02:10,062 WARN L205 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 81 [2021-06-05 05:02:10,580 WARN L205 SmtUtils]: Spent 471.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2021-06-05 05:02:11,010 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2021-06-05 05:02:11,513 WARN L205 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 88 [2021-06-05 05:02:12,072 WARN L205 SmtUtils]: Spent 520.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 91 [2021-06-05 05:02:12,547 WARN L205 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2021-06-05 05:02:12,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:12,579 INFO L93 Difference]: Finished difference Result 722 states and 2057 transitions. [2021-06-05 05:02:12,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 05:02:12,580 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:02:12,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:12,581 INFO L225 Difference]: With dead ends: 722 [2021-06-05 05:02:12,581 INFO L226 Difference]: Without dead ends: 692 [2021-06-05 05:02:12,581 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 4864.2ms TimeCoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:02:12,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2021-06-05 05:02:12,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 353. [2021-06-05 05:02:12,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 3.0880681818181817) internal successors, (1087), 352 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:12,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 1087 transitions. [2021-06-05 05:02:12,586 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 1087 transitions. Word has length 20 [2021-06-05 05:02:12,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:12,586 INFO L482 AbstractCegarLoop]: Abstraction has 353 states and 1087 transitions. [2021-06-05 05:02:12,586 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:12,586 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 1087 transitions. [2021-06-05 05:02:12,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:02:12,586 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:12,586 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:12,787 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4405,57 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:12,788 INFO L430 AbstractCegarLoop]: === Iteration 179 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:12,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:12,788 INFO L82 PathProgramCache]: Analyzing trace with hash -828486312, now seen corresponding path program 30 times [2021-06-05 05:02:12,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:12,788 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698026189] [2021-06-05 05:02:12,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:12,991 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:12,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698026189] [2021-06-05 05:02:12,992 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698026189] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:12,992 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [142842722] [2021-06-05 05:02:12,992 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:13,028 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:02:13,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:13,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:02:13,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:13,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,295 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:13,296 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:13,303 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:13,311 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:13,318 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,323 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,323 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:13,324 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,329 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:13,330 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,577 WARN L205 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2021-06-05 05:02:13,578 INFO L628 ElimStorePlain]: treesize reduction 358, result has 42.5 percent of original size [2021-06-05 05:02:13,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:13,582 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:13,587 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,591 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:13,592 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,768 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2021-06-05 05:02:13,769 INFO L628 ElimStorePlain]: treesize reduction 27, result has 89.0 percent of original size [2021-06-05 05:02:13,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:02:13,773 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,777 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:13,778 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,781 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:13,781 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:13,782 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:13,917 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2021-06-05 05:02:13,917 INFO L628 ElimStorePlain]: treesize reduction 22, result has 87.4 percent of original size [2021-06-05 05:02:13,930 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2021-06-05 05:02:13,930 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:715, output treesize:135 [2021-06-05 05:02:14,724 INFO L446 ElimStorePlain]: Different costs {0=[array_6, v_prenex_562, v_prenex_564, v_prenex_566], 1=[array_0, v_prenex_561, v_prenex_563, v_prenex_565]} [2021-06-05 05:02:14,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:14,731 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:14,738 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:14,745 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:14,752 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:14,759 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:14,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:14,766 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:15,064 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 66 [2021-06-05 05:02:15,065 INFO L628 ElimStorePlain]: treesize reduction 1005, result has 18.8 percent of original size [2021-06-05 05:02:15,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:15,069 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:15,163 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:15,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:15,168 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:15,253 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:15,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:15,257 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:15,341 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:15,341 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:02:15,342 INFO L518 ElimStorePlain]: Eliminatee v_prenex_561 vanished before elimination [2021-06-05 05:02:15,342 INFO L518 ElimStorePlain]: Eliminatee v_prenex_563 vanished before elimination [2021-06-05 05:02:15,342 INFO L518 ElimStorePlain]: Eliminatee v_prenex_565 vanished before elimination [2021-06-05 05:02:15,344 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 05:02:15,344 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:1348, output treesize:188 [2021-06-05 05:02:15,482 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-06-05 05:02:15,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:15,687 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [142842722] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:15,687 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:15,687 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:02:15,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658034050] [2021-06-05 05:02:15,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:02:15,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:15,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:02:15,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:02:15,688 INFO L87 Difference]: Start difference. First operand 353 states and 1087 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:16,169 WARN L205 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 93 [2021-06-05 05:02:16,453 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 84 [2021-06-05 05:02:16,781 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 95 [2021-06-05 05:02:17,023 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2021-06-05 05:02:17,687 WARN L205 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 111 [2021-06-05 05:02:18,241 WARN L205 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 98 [2021-06-05 05:02:18,652 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 121 [2021-06-05 05:02:18,995 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 104 [2021-06-05 05:02:19,409 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 127 [2021-06-05 05:02:19,677 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 108 [2021-06-05 05:02:20,069 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 126 [2021-06-05 05:02:20,428 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 110 [2021-06-05 05:02:20,748 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 113 [2021-06-05 05:02:21,361 WARN L205 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 130 [2021-06-05 05:02:21,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:21,428 INFO L93 Difference]: Finished difference Result 869 states and 2417 transitions. [2021-06-05 05:02:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 05:02:21,428 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:02:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:21,429 INFO L225 Difference]: With dead ends: 869 [2021-06-05 05:02:21,429 INFO L226 Difference]: Without dead ends: 795 [2021-06-05 05:02:21,429 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 6042.4ms TimeCoverageRelationStatistics Valid=225, Invalid=965, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:02:21,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2021-06-05 05:02:21,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 359. [2021-06-05 05:02:21,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 3.0977653631284916) internal successors, (1109), 358 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:21,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 1109 transitions. [2021-06-05 05:02:21,434 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 1109 transitions. Word has length 20 [2021-06-05 05:02:21,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:21,434 INFO L482 AbstractCegarLoop]: Abstraction has 359 states and 1109 transitions. [2021-06-05 05:02:21,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:21,434 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 1109 transitions. [2021-06-05 05:02:21,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:02:21,435 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:21,435 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:21,635 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4452,58 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:21,635 INFO L430 AbstractCegarLoop]: === Iteration 180 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:21,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:21,636 INFO L82 PathProgramCache]: Analyzing trace with hash 637711574, now seen corresponding path program 31 times [2021-06-05 05:02:21,636 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:21,636 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516960421] [2021-06-05 05:02:21,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:21,807 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:21,807 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516960421] [2021-06-05 05:02:21,807 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516960421] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:21,808 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853659029] [2021-06-05 05:02:21,808 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:21,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:02:21,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:22,286 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,287 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:02:22,288 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:22,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:02:22,295 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:22,300 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,300 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:02:22,301 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:22,306 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:22,308 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:22,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,313 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:22,314 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:22,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,319 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:22,320 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:22,607 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 70 [2021-06-05 05:02:22,607 INFO L628 ElimStorePlain]: treesize reduction 430, result has 42.1 percent of original size [2021-06-05 05:02:22,611 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:02:22,613 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:22,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:22,618 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:22,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:22,623 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:22,847 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 66 [2021-06-05 05:02:22,847 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.7 percent of original size [2021-06-05 05:02:22,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:22,853 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:22,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:02:22,858 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:22,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:22,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:22,862 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:22,971 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-06-05 05:02:22,971 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:22,978 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:02:22,978 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:949, output treesize:258 [2021-06-05 05:02:23,177 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2021-06-05 05:02:23,579 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 99 [2021-06-05 05:02:23,842 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_580, v_prenex_582, v_prenex_584, array_6, v_prenex_586, v_prenex_578], 1=[array_0, v_prenex_581, v_prenex_583, v_prenex_585, v_prenex_577, v_prenex_579]} [2021-06-05 05:02:23,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:02:23,851 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:23,858 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:23,859 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:23,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:23,868 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:23,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:23,876 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:23,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:23,884 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:23,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:23,893 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 2 xjuncts. [2021-06-05 05:02:24,304 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 99 [2021-06-05 05:02:24,305 INFO L628 ElimStorePlain]: treesize reduction 1474, result has 15.4 percent of original size [2021-06-05 05:02:24,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:24,311 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,419 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 05:02:24,420 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:24,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:02:24,425 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,527 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-05 05:02:24,528 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:24,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:24,533 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,632 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:24,636 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:24,637 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,736 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:24,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:02:24,741 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:24,833 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:24,833 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:02:24,833 INFO L518 ElimStorePlain]: Eliminatee v_prenex_581 vanished before elimination [2021-06-05 05:02:24,833 INFO L518 ElimStorePlain]: Eliminatee v_prenex_583 vanished before elimination [2021-06-05 05:02:24,833 INFO L518 ElimStorePlain]: Eliminatee v_prenex_585 vanished before elimination [2021-06-05 05:02:24,833 INFO L518 ElimStorePlain]: Eliminatee v_prenex_577 vanished before elimination [2021-06-05 05:02:24,833 INFO L518 ElimStorePlain]: Eliminatee v_prenex_579 vanished before elimination [2021-06-05 05:02:24,836 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:02:24,836 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 18 variables, input treesize:1893, output treesize:198 [2021-06-05 05:02:25,001 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-06-05 05:02:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:25,221 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853659029] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:25,221 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:25,221 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:02:25,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683208031] [2021-06-05 05:02:25,221 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:02:25,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:25,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:02:25,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:02:25,222 INFO L87 Difference]: Start difference. First operand 359 states and 1109 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:25,788 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 124 [2021-06-05 05:02:26,019 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 52 [2021-06-05 05:02:26,523 WARN L205 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 129 [2021-06-05 05:02:26,727 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 05:02:27,074 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 135 [2021-06-05 05:02:27,754 WARN L205 SmtUtils]: Spent 600.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 136 [2021-06-05 05:02:27,957 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 05:02:28,342 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 141 [2021-06-05 05:02:29,012 WARN L205 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 146 [2021-06-05 05:02:29,255 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 05:02:29,665 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 144 [2021-06-05 05:02:30,325 WARN L205 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 152 [2021-06-05 05:02:30,742 WARN L205 SmtUtils]: Spent 360.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 139 [2021-06-05 05:02:31,403 WARN L205 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 153 [2021-06-05 05:02:31,633 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2021-06-05 05:02:32,382 WARN L205 SmtUtils]: Spent 649.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 162 [2021-06-05 05:02:32,856 WARN L205 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 146 [2021-06-05 05:02:32,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:32,920 INFO L93 Difference]: Finished difference Result 839 states and 2386 transitions. [2021-06-05 05:02:32,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 05:02:32,920 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:02:32,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:32,921 INFO L225 Difference]: With dead ends: 839 [2021-06-05 05:02:32,921 INFO L226 Difference]: Without dead ends: 794 [2021-06-05 05:02:32,921 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 8119.7ms TimeCoverageRelationStatistics Valid=276, Invalid=1130, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 05:02:32,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-06-05 05:02:32,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 361. [2021-06-05 05:02:32,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 3.1055555555555556) internal successors, (1118), 360 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:32,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 1118 transitions. [2021-06-05 05:02:32,926 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 1118 transitions. Word has length 20 [2021-06-05 05:02:32,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:32,927 INFO L482 AbstractCegarLoop]: Abstraction has 361 states and 1118 transitions. [2021-06-05 05:02:32,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:32,927 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 1118 transitions. [2021-06-05 05:02:32,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:02:32,927 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:32,927 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:33,127 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4599 [2021-06-05 05:02:33,128 INFO L430 AbstractCegarLoop]: === Iteration 181 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:33,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:33,128 INFO L82 PathProgramCache]: Analyzing trace with hash -426176046, now seen corresponding path program 32 times [2021-06-05 05:02:33,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:33,128 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715378541] [2021-06-05 05:02:33,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:33,345 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:33,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715378541] [2021-06-05 05:02:33,345 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715378541] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:33,345 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [497485291] [2021-06-05 05:02:33,345 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:33,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:02:33,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:33,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:02:33,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:33,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:33,940 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:33,946 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,951 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:33,952 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,957 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:33,958 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:33,964 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:33,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:33,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:33,969 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:34,284 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 69 [2021-06-05 05:02:34,284 INFO L628 ElimStorePlain]: treesize reduction 384, result has 48.6 percent of original size [2021-06-05 05:02:34,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:34,288 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:34,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:34,289 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:34,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:34,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:34,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:34,294 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:34,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:34,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:34,299 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:34,431 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-05 05:02:34,432 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:34,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:34,436 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:34,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:34,437 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:34,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:34,442 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:34,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:02:34,443 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:34,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:34,446 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:34,447 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:34,662 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2021-06-05 05:02:34,663 INFO L628 ElimStorePlain]: treesize reduction 35, result has 88.0 percent of original size [2021-06-05 05:02:34,668 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:02:34,668 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:913, output treesize:245 [2021-06-05 05:02:35,063 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2021-06-05 05:02:35,322 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2021-06-05 05:02:35,558 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_602, v_prenex_604, v_prenex_606, v_prenex_608, array_6, v_prenex_600], 1=[v_prenex_603, v_prenex_605, array_3, v_prenex_607, v_prenex_599, v_prenex_601]} [2021-06-05 05:02:35,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:35,567 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:35,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:35,576 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:35,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:35,584 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:35,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:35,593 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:35,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:35,602 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:35,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:35,610 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:35,957 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 86 [2021-06-05 05:02:35,958 INFO L628 ElimStorePlain]: treesize reduction 1314, result has 13.2 percent of original size [2021-06-05 05:02:35,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:35,964 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,040 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:36,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:36,046 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,112 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:36,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:36,117 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,242 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2021-06-05 05:02:36,243 INFO L628 ElimStorePlain]: treesize reduction 7, result has 95.9 percent of original size [2021-06-05 05:02:36,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:36,247 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,309 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:36,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:02:36,314 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:36,371 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:36,371 INFO L518 ElimStorePlain]: Eliminatee v_prenex_603 vanished before elimination [2021-06-05 05:02:36,371 INFO L518 ElimStorePlain]: Eliminatee v_prenex_605 vanished before elimination [2021-06-05 05:02:36,371 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:02:36,371 INFO L518 ElimStorePlain]: Eliminatee v_prenex_607 vanished before elimination [2021-06-05 05:02:36,371 INFO L518 ElimStorePlain]: Eliminatee v_prenex_599 vanished before elimination [2021-06-05 05:02:36,371 INFO L518 ElimStorePlain]: Eliminatee v_prenex_601 vanished before elimination [2021-06-05 05:02:36,373 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:02:36,373 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 18 variables, input treesize:1621, output treesize:107 [2021-06-05 05:02:36,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:36,507 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [497485291] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:36,507 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:36,507 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:02:36,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808577793] [2021-06-05 05:02:36,508 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:02:36,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:36,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:02:36,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:02:36,508 INFO L87 Difference]: Start difference. First operand 361 states and 1118 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:37,011 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2021-06-05 05:02:37,392 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 129 [2021-06-05 05:02:37,931 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 142 [2021-06-05 05:02:38,080 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2021-06-05 05:02:38,485 WARN L205 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 134 [2021-06-05 05:02:39,195 WARN L205 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 155 [2021-06-05 05:02:39,383 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2021-06-05 05:02:39,740 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2021-06-05 05:02:39,904 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 05:02:40,147 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2021-06-05 05:02:40,321 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-05 05:02:40,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:40,362 INFO L93 Difference]: Finished difference Result 634 states and 1856 transitions. [2021-06-05 05:02:40,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:02:40,363 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:02:40,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:40,363 INFO L225 Difference]: With dead ends: 634 [2021-06-05 05:02:40,363 INFO L226 Difference]: Without dead ends: 571 [2021-06-05 05:02:40,364 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 4284.5ms TimeCoverageRelationStatistics Valid=188, Invalid=868, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:02:40,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-06-05 05:02:40,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 368. [2021-06-05 05:02:40,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 3.11716621253406) internal successors, (1144), 367 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:40,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1144 transitions. [2021-06-05 05:02:40,368 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1144 transitions. Word has length 20 [2021-06-05 05:02:40,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:40,368 INFO L482 AbstractCegarLoop]: Abstraction has 368 states and 1144 transitions. [2021-06-05 05:02:40,368 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:40,368 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1144 transitions. [2021-06-05 05:02:40,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:02:40,368 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:40,369 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:40,569 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4755,60 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:40,569 INFO L430 AbstractCegarLoop]: === Iteration 182 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:40,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:40,569 INFO L82 PathProgramCache]: Analyzing trace with hash -633183728, now seen corresponding path program 33 times [2021-06-05 05:02:40,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:40,569 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831275603] [2021-06-05 05:02:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:40,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:40,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:40,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831275603] [2021-06-05 05:02:40,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831275603] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:40,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431057939] [2021-06-05 05:02:40,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:40,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 05:02:40,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:40,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:02:40,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:41,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:41,121 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,126 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:41,128 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,132 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,133 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:41,134 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,139 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:41,140 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,145 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:41,146 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,151 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:41,152 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,423 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2021-06-05 05:02:41,424 INFO L628 ElimStorePlain]: treesize reduction 402, result has 42.1 percent of original size [2021-06-05 05:02:41,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:41,429 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:41,435 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:41,440 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,549 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-06-05 05:02:41,549 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:41,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,554 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:41,555 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,558 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:41,559 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:41,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:41,563 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:41,662 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:41,667 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2021-06-05 05:02:41,667 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:841, output treesize:185 [2021-06-05 05:02:41,835 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 69 [2021-06-05 05:02:42,396 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_625, v_prenex_627, v_prenex_617, v_prenex_619, array_6, v_prenex_621, v_prenex_633, v_prenex_623], 1=[v_prenex_624, v_prenex_626, v_prenex_616, array_3, v_prenex_628, v_prenex_618, v_prenex_620, v_prenex_622]} [2021-06-05 05:02:42,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:42,404 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:42,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:42,412 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:42,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:42,419 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:42,681 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 71 [2021-06-05 05:02:42,681 INFO L628 ElimStorePlain]: treesize reduction 620, result has 27.5 percent of original size [2021-06-05 05:02:42,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:42,686 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:42,771 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:42,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:42,776 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:42,863 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:42,863 INFO L518 ElimStorePlain]: Eliminatee v_prenex_619 vanished before elimination [2021-06-05 05:02:42,863 INFO L518 ElimStorePlain]: Eliminatee array_6 vanished before elimination [2021-06-05 05:02:42,863 INFO L518 ElimStorePlain]: Eliminatee v_prenex_621 vanished before elimination [2021-06-05 05:02:42,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:02:42,867 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:42,945 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:42,945 INFO L518 ElimStorePlain]: Eliminatee v_prenex_623 vanished before elimination [2021-06-05 05:02:42,945 INFO L518 ElimStorePlain]: Eliminatee v_prenex_624 vanished before elimination [2021-06-05 05:02:42,945 INFO L518 ElimStorePlain]: Eliminatee v_prenex_626 vanished before elimination [2021-06-05 05:02:42,945 INFO L518 ElimStorePlain]: Eliminatee v_prenex_616 vanished before elimination [2021-06-05 05:02:42,945 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:02:42,945 INFO L518 ElimStorePlain]: Eliminatee v_prenex_628 vanished before elimination [2021-06-05 05:02:42,945 INFO L518 ElimStorePlain]: Eliminatee v_prenex_618 vanished before elimination [2021-06-05 05:02:42,945 INFO L518 ElimStorePlain]: Eliminatee v_prenex_620 vanished before elimination [2021-06-05 05:02:42,945 INFO L518 ElimStorePlain]: Eliminatee v_prenex_622 vanished before elimination [2021-06-05 05:02:42,948 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 16 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 05:02:42,948 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 24 variables, input treesize:942, output treesize:167 [2021-06-05 05:02:43,075 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2021-06-05 05:02:43,307 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:43,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431057939] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:43,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:43,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:02:43,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755057740] [2021-06-05 05:02:43,308 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:02:43,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:43,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:02:43,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:02:43,308 INFO L87 Difference]: Start difference. First operand 368 states and 1144 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:43,772 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 61 [2021-06-05 05:02:44,176 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 98 [2021-06-05 05:02:44,478 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 05:02:44,894 WARN L205 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2021-06-05 05:02:45,370 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 82 [2021-06-05 05:02:45,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:45,421 INFO L93 Difference]: Finished difference Result 650 states and 1923 transitions. [2021-06-05 05:02:45,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:02:45,422 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:02:45,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:45,423 INFO L225 Difference]: With dead ends: 650 [2021-06-05 05:02:45,423 INFO L226 Difference]: Without dead ends: 635 [2021-06-05 05:02:45,423 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2493.4ms TimeCoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:02:45,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-06-05 05:02:45,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 370. [2021-06-05 05:02:45,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 3.124661246612466) internal successors, (1153), 369 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:45,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 1153 transitions. [2021-06-05 05:02:45,427 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 1153 transitions. Word has length 20 [2021-06-05 05:02:45,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:45,428 INFO L482 AbstractCegarLoop]: Abstraction has 370 states and 1153 transitions. [2021-06-05 05:02:45,428 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:45,428 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 1153 transitions. [2021-06-05 05:02:45,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:02:45,428 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:45,428 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:45,628 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable4920 [2021-06-05 05:02:45,629 INFO L430 AbstractCegarLoop]: === Iteration 183 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:45,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:45,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1851819088, now seen corresponding path program 34 times [2021-06-05 05:02:45,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:45,629 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105317193] [2021-06-05 05:02:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:45,775 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:45,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105317193] [2021-06-05 05:02:45,775 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105317193] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:45,775 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592925620] [2021-06-05 05:02:45,776 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:45,803 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:02:45,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:45,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:02:45,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:46,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:46,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:46,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:46,349 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:46,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:46,355 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:46,356 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:46,357 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:46,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:46,362 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:46,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:46,364 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:46,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:46,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:46,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:46,370 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:46,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:46,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:46,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:46,377 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:46,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:46,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:46,383 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:46,715 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 69 [2021-06-05 05:02:46,716 INFO L628 ElimStorePlain]: treesize reduction 456, result has 42.7 percent of original size [2021-06-05 05:02:46,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:46,721 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:46,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:46,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:46,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:46,729 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:46,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:46,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:46,736 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:46,988 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2021-06-05 05:02:46,989 INFO L628 ElimStorePlain]: treesize reduction 40, result has 87.2 percent of original size [2021-06-05 05:02:46,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:46,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:46,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:46,994 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:46,999 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:46,999 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:47,003 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:47,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:47,004 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:47,120 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-06-05 05:02:47,120 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:47,125 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2021-06-05 05:02:47,125 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:949, output treesize:242 [2021-06-05 05:02:47,354 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2021-06-05 05:02:47,729 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_646, array_6, v_prenex_642, v_prenex_644], 1=[array_3, v_prenex_641, v_prenex_643, v_prenex_645]} [2021-06-05 05:02:47,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:47,736 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:47,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:47,743 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:47,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:47,750 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:47,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:47,757 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:47,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:47,764 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:47,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:47,770 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:48,134 WARN L205 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 81 [2021-06-05 05:02:48,135 INFO L628 ElimStorePlain]: treesize reduction 1020, result has 23.1 percent of original size [2021-06-05 05:02:48,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:02:48,140 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:48,259 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 05:02:48,259 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:48,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:48,264 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:48,380 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 05:02:48,380 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:48,384 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:48,385 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:48,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:48,389 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:48,604 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2021-06-05 05:02:48,605 INFO L628 ElimStorePlain]: treesize reduction 8, result has 97.0 percent of original size [2021-06-05 05:02:48,605 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:02:48,605 INFO L518 ElimStorePlain]: Eliminatee v_prenex_641 vanished before elimination [2021-06-05 05:02:48,605 INFO L518 ElimStorePlain]: Eliminatee v_prenex_643 vanished before elimination [2021-06-05 05:02:48,605 INFO L518 ElimStorePlain]: Eliminatee v_prenex_645 vanished before elimination [2021-06-05 05:02:48,608 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:02:48,608 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:1498, output treesize:240 [2021-06-05 05:02:48,762 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2021-06-05 05:02:48,977 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:48,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592925620] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:48,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:48,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:02:48,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465448499] [2021-06-05 05:02:48,978 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:02:48,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:48,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:02:48,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:02:48,978 INFO L87 Difference]: Start difference. First operand 370 states and 1153 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:49,650 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-06-05 05:02:49,967 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 106 [2021-06-05 05:02:50,312 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2021-06-05 05:02:50,733 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-06-05 05:02:51,201 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2021-06-05 05:02:51,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:51,240 INFO L93 Difference]: Finished difference Result 617 states and 1842 transitions. [2021-06-05 05:02:51,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:02:51,240 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:02:51,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:51,241 INFO L225 Difference]: With dead ends: 617 [2021-06-05 05:02:51,241 INFO L226 Difference]: Without dead ends: 602 [2021-06-05 05:02:51,241 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2734.8ms TimeCoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:02:51,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-06-05 05:02:51,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 368. [2021-06-05 05:02:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 3.11716621253406) internal successors, (1144), 367 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:51,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1144 transitions. [2021-06-05 05:02:51,247 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1144 transitions. Word has length 20 [2021-06-05 05:02:51,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:51,247 INFO L482 AbstractCegarLoop]: Abstraction has 368 states and 1144 transitions. [2021-06-05 05:02:51,247 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:51,247 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1144 transitions. [2021-06-05 05:02:51,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:02:51,248 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:51,248 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:51,464 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5068 [2021-06-05 05:02:51,464 INFO L430 AbstractCegarLoop]: === Iteration 184 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:51,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:51,465 INFO L82 PathProgramCache]: Analyzing trace with hash 169929870, now seen corresponding path program 35 times [2021-06-05 05:02:51,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:51,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140411980] [2021-06-05 05:02:51,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:51,622 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:51,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140411980] [2021-06-05 05:02:51,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140411980] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:51,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738376654] [2021-06-05 05:02:51,622 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:51,663 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:02:51,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:51,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:02:51,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:51,849 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:51,850 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:02:51,855 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:51,860 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:51,865 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:51,870 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:51,875 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:51,880 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:51,885 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:51,891 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:51,896 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:51,901 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:51,907 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:02:51,912 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:51,917 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:02:51,922 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:51,927 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:51,931 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:51,936 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:02:51,941 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:51,946 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:51,951 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,955 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:51,955 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:51,960 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:51,965 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,969 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:02:51,970 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 05:02:51,975 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:51,979 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:02:51,984 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:02:51,988 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:51,993 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:51,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:51,998 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:52,002 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:52,007 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:02:52,011 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:52,016 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2021-06-05 05:02:52,020 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:52,181 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 37 [2021-06-05 05:02:52,181 INFO L628 ElimStorePlain]: treesize reduction 474, result has 25.1 percent of original size [2021-06-05 05:02:52,182 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-06-05 05:02:52,183 INFO L247 ElimStorePlain]: Needed 37 recursive calls to eliminate 1 variables, input treesize:1765, output treesize:159 [2021-06-05 05:02:52,465 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 43 [2021-06-05 05:02:52,802 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2021-06-05 05:02:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:52,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738376654] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:52,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:52,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 05:02:52,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973046469] [2021-06-05 05:02:52,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:02:52,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:52,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:02:52,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:02:52,906 INFO L87 Difference]: Start difference. First operand 368 states and 1144 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:53,447 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2021-06-05 05:02:53,656 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2021-06-05 05:02:54,003 WARN L205 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 69 [2021-06-05 05:02:54,351 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2021-06-05 05:02:54,722 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2021-06-05 05:02:54,907 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2021-06-05 05:02:55,109 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-06-05 05:02:55,321 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2021-06-05 05:02:55,565 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 05:02:55,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:02:55,604 INFO L93 Difference]: Finished difference Result 625 states and 1837 transitions. [2021-06-05 05:02:55,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 05:02:55,604 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:02:55,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:02:55,605 INFO L225 Difference]: With dead ends: 625 [2021-06-05 05:02:55,605 INFO L226 Difference]: Without dead ends: 595 [2021-06-05 05:02:55,605 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3057.9ms TimeCoverageRelationStatistics Valid=164, Invalid=828, Unknown=0, NotChecked=0, Total=992 [2021-06-05 05:02:55,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2021-06-05 05:02:55,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 371. [2021-06-05 05:02:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 3.1216216216216215) internal successors, (1155), 370 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:55,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 1155 transitions. [2021-06-05 05:02:55,609 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 1155 transitions. Word has length 20 [2021-06-05 05:02:55,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:02:55,609 INFO L482 AbstractCegarLoop]: Abstraction has 371 states and 1155 transitions. [2021-06-05 05:02:55,610 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:02:55,610 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 1155 transitions. [2021-06-05 05:02:55,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:02:55,610 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:02:55,610 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:02:55,810 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5230 [2021-06-05 05:02:55,811 INFO L430 AbstractCegarLoop]: === Iteration 185 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:02:55,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:02:55,811 INFO L82 PathProgramCache]: Analyzing trace with hash -146181486, now seen corresponding path program 36 times [2021-06-05 05:02:55,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:02:55,811 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270149978] [2021-06-05 05:02:55,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:02:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:02:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:55,985 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:02:55,985 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270149978] [2021-06-05 05:02:55,986 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270149978] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:55,986 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737126636] [2021-06-05 05:02:55,986 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:02:56,019 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:02:56,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:02:56,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:02:56,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:02:56,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:56,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:56,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:56,579 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:56,585 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:56,586 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:56,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:02:56,587 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:56,592 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:56,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:56,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:56,594 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:56,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:56,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:56,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:56,603 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:56,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:56,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:56,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:56,610 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:56,615 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:56,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:02:56,616 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:56,948 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2021-06-05 05:02:56,948 INFO L628 ElimStorePlain]: treesize reduction 482, result has 41.5 percent of original size [2021-06-05 05:02:56,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:56,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:56,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:56,954 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:56,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:56,958 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:56,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:56,959 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:56,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:56,964 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:57,112 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-05 05:02:57,112 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:57,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:02:57,117 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:57,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:57,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:57,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:57,123 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:57,127 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:02:57,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:02:57,128 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:57,353 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2021-06-05 05:02:57,353 INFO L628 ElimStorePlain]: treesize reduction 42, result has 85.3 percent of original size [2021-06-05 05:02:57,358 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2021-06-05 05:02:57,359 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:949, output treesize:235 [2021-06-05 05:02:57,572 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-05 05:02:57,935 WARN L205 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 83 [2021-06-05 05:02:58,131 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_669, v_prenex_682, v_prenex_671, v_prenex_661, array_6, v_prenex_673, v_prenex_663, v_prenex_675, v_prenex_665, v_prenex_667], 1=[v_prenex_668, array_3, v_prenex_670, v_prenex_660, v_prenex_672, v_prenex_662, v_prenex_674, v_prenex_664, v_prenex_676, v_prenex_666]} [2021-06-05 05:02:58,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:02:58,142 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,507 WARN L205 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 86 [2021-06-05 05:02:58,507 INFO L628 ElimStorePlain]: treesize reduction 868, result has 24.6 percent of original size [2021-06-05 05:02:58,507 INFO L518 ElimStorePlain]: Eliminatee v_prenex_682 vanished before elimination [2021-06-05 05:02:58,507 INFO L518 ElimStorePlain]: Eliminatee v_prenex_671 vanished before elimination [2021-06-05 05:02:58,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:02:58,513 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,626 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 05:02:58,626 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:58,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:58,631 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,736 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 05:02:58,736 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:58,736 INFO L518 ElimStorePlain]: Eliminatee v_prenex_673 vanished before elimination [2021-06-05 05:02:58,736 INFO L518 ElimStorePlain]: Eliminatee v_prenex_663 vanished before elimination [2021-06-05 05:02:58,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:58,741 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,846 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 05:02:58,847 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:58,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:02:58,851 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:02:58,953 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 05:02:58,954 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:02:58,954 INFO L518 ElimStorePlain]: Eliminatee v_prenex_667 vanished before elimination [2021-06-05 05:02:58,954 INFO L518 ElimStorePlain]: Eliminatee v_prenex_668 vanished before elimination [2021-06-05 05:02:58,954 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:02:58,954 INFO L518 ElimStorePlain]: Eliminatee v_prenex_670 vanished before elimination [2021-06-05 05:02:58,954 INFO L518 ElimStorePlain]: Eliminatee v_prenex_660 vanished before elimination [2021-06-05 05:02:58,954 INFO L518 ElimStorePlain]: Eliminatee v_prenex_672 vanished before elimination [2021-06-05 05:02:58,954 INFO L518 ElimStorePlain]: Eliminatee v_prenex_662 vanished before elimination [2021-06-05 05:02:58,954 INFO L518 ElimStorePlain]: Eliminatee v_prenex_674 vanished before elimination [2021-06-05 05:02:58,954 INFO L518 ElimStorePlain]: Eliminatee v_prenex_664 vanished before elimination [2021-06-05 05:02:58,954 INFO L518 ElimStorePlain]: Eliminatee v_prenex_676 vanished before elimination [2021-06-05 05:02:58,954 INFO L518 ElimStorePlain]: Eliminatee v_prenex_666 vanished before elimination [2021-06-05 05:02:58,957 INFO L550 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 20 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:02:58,957 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 30 variables, input treesize:1158, output treesize:216 [2021-06-05 05:02:59,120 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-06-05 05:02:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:02:59,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737126636] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:02:59,291 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:02:59,291 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:02:59,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316496776] [2021-06-05 05:02:59,291 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:02:59,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:02:59,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:02:59,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:02:59,291 INFO L87 Difference]: Start difference. First operand 371 states and 1155 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:00,027 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 96 [2021-06-05 05:03:00,355 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 100 [2021-06-05 05:03:00,957 WARN L205 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 135 [2021-06-05 05:03:01,463 WARN L205 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 145 [2021-06-05 05:03:01,754 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2021-06-05 05:03:01,984 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 05:03:02,262 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2021-06-05 05:03:02,559 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2021-06-05 05:03:02,943 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2021-06-05 05:03:03,252 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2021-06-05 05:03:03,409 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 05:03:03,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:03,566 INFO L93 Difference]: Finished difference Result 728 states and 2069 transitions. [2021-06-05 05:03:03,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 05:03:03,567 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:03:03,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:03,568 INFO L225 Difference]: With dead ends: 728 [2021-06-05 05:03:03,568 INFO L226 Difference]: Without dead ends: 656 [2021-06-05 05:03:03,568 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 4790.5ms TimeCoverageRelationStatistics Valid=190, Invalid=932, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 05:03:03,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-06-05 05:03:03,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 368. [2021-06-05 05:03:03,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 3.11716621253406) internal successors, (1144), 367 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:03,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1144 transitions. [2021-06-05 05:03:03,574 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1144 transitions. Word has length 20 [2021-06-05 05:03:03,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:03,574 INFO L482 AbstractCegarLoop]: Abstraction has 368 states and 1144 transitions. [2021-06-05 05:03:03,574 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:03,574 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1144 transitions. [2021-06-05 05:03:03,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:03:03,575 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:03,575 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:03,784 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5319,64 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:03,785 INFO L430 AbstractCegarLoop]: === Iteration 186 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:03,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:03,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1265307084, now seen corresponding path program 37 times [2021-06-05 05:03:03,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:03,785 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127595524] [2021-06-05 05:03:03,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:03,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:04,012 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:04,012 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:04,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127595524] [2021-06-05 05:03:04,012 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127595524] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:04,012 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419777247] [2021-06-05 05:03:04,012 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:04,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:03:04,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:04,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:04,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:04,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:04,568 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:04,574 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:04,574 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:04,580 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:04,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:04,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:04,582 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:04,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:04,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:04,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:04,590 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:04,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:04,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:04,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:04,598 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:04,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:04,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:03:04,609 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:04,912 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 65 [2021-06-05 05:03:04,912 INFO L628 ElimStorePlain]: treesize reduction 420, result has 43.1 percent of original size [2021-06-05 05:03:04,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:04,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:04,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:04,918 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:04,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:04,922 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:04,926 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:04,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:04,927 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:05,048 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2021-06-05 05:03:05,048 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:05,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:05,053 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:05,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:05,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:05,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:05,058 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:05,062 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:05,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:05,063 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:05,261 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2021-06-05 05:03:05,261 INFO L628 ElimStorePlain]: treesize reduction 37, result has 85.8 percent of original size [2021-06-05 05:03:05,265 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2021-06-05 05:03:05,266 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:895, output treesize:199 [2021-06-05 05:03:05,460 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2021-06-05 05:03:05,658 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_691, v_prenex_693, array_6, v_prenex_695], 1=[array_3, v_prenex_690, v_prenex_692, v_prenex_694]} [2021-06-05 05:03:05,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:05,665 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:05,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:05,672 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:05,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:05,678 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:05,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:05,685 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:05,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:03:05,692 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:05,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:03:05,698 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:06,029 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 73 [2021-06-05 05:03:06,029 INFO L628 ElimStorePlain]: treesize reduction 937, result has 21.7 percent of original size [2021-06-05 05:03:06,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:06,034 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:06,136 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 05:03:06,137 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:06,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:06,141 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:06,239 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:06,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:06,243 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:06,341 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:06,341 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:03:06,341 INFO L518 ElimStorePlain]: Eliminatee v_prenex_690 vanished before elimination [2021-06-05 05:03:06,341 INFO L518 ElimStorePlain]: Eliminatee v_prenex_692 vanished before elimination [2021-06-05 05:03:06,341 INFO L518 ElimStorePlain]: Eliminatee v_prenex_694 vanished before elimination [2021-06-05 05:03:06,344 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:03:06,345 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:1372, output treesize:190 [2021-06-05 05:03:06,484 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-06-05 05:03:06,785 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:06,785 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419777247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:06,785 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:06,786 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:03:06,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499818042] [2021-06-05 05:03:06,786 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:03:06,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:06,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:03:06,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:03:06,786 INFO L87 Difference]: Start difference. First operand 368 states and 1144 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:07,454 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 94 [2021-06-05 05:03:07,755 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 97 [2021-06-05 05:03:08,042 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-06-05 05:03:08,244 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-06-05 05:03:08,546 WARN L205 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 05:03:08,899 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 05:03:09,355 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 05:03:09,775 WARN L205 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2021-06-05 05:03:09,933 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-06-05 05:03:10,321 WARN L205 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2021-06-05 05:03:10,752 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2021-06-05 05:03:11,200 WARN L205 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 93 [2021-06-05 05:03:11,365 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-06-05 05:03:11,784 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2021-06-05 05:03:12,069 WARN L205 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 05:03:12,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:12,092 INFO L93 Difference]: Finished difference Result 924 states and 2599 transitions. [2021-06-05 05:03:12,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 05:03:12,093 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:03:12,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:12,094 INFO L225 Difference]: With dead ends: 924 [2021-06-05 05:03:12,094 INFO L226 Difference]: Without dead ends: 852 [2021-06-05 05:03:12,094 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 5566.7ms TimeCoverageRelationStatistics Valid=250, Invalid=1156, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 05:03:12,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2021-06-05 05:03:12,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 375. [2021-06-05 05:03:12,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 374 states have (on average 3.1550802139037435) internal successors, (1180), 374 states have internal predecessors, (1180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:12,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 1180 transitions. [2021-06-05 05:03:12,099 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 1180 transitions. Word has length 20 [2021-06-05 05:03:12,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:12,100 INFO L482 AbstractCegarLoop]: Abstraction has 375 states and 1180 transitions. [2021-06-05 05:03:12,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:12,100 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 1180 transitions. [2021-06-05 05:03:12,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:03:12,100 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:12,100 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:12,300 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5407,65 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:12,301 INFO L430 AbstractCegarLoop]: === Iteration 187 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:12,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:12,301 INFO L82 PathProgramCache]: Analyzing trace with hash -2040599664, now seen corresponding path program 38 times [2021-06-05 05:03:12,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:12,301 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457119225] [2021-06-05 05:03:12,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:12,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:12,526 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:12,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457119225] [2021-06-05 05:03:12,526 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457119225] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:12,526 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869300624] [2021-06-05 05:03:12,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:12,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:03:12,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:12,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:03:12,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:13,109 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:13,109 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:13,110 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:13,443 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 100 [2021-06-05 05:03:13,443 INFO L628 ElimStorePlain]: treesize reduction 181, result has 68.0 percent of original size [2021-06-05 05:03:13,448 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:13,449 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:13,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:13,450 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:13,454 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:13,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:13,457 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:13,601 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 05:03:13,602 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:13,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:13,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:13,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:13,608 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:13,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:13,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:13,613 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:13,752 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 05:03:13,752 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:13,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:13,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:13,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:03:13,759 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:13,763 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:13,763 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:13,872 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 05:03:13,873 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:13,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:13,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:13,878 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:13,986 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 05:03:13,986 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:13,990 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:13,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:13,991 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:14,096 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 05:03:14,096 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:14,102 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:03:14,102 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:573, output treesize:240 [2021-06-05 05:03:14,305 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2021-06-05 05:03:14,495 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_712, v_prenex_714, v_prenex_716, v_prenex_718, array_6, v_prenex_710], 1=[v_prenex_713, v_prenex_715, array_3, v_prenex_717, v_prenex_709, v_prenex_711]} [2021-06-05 05:03:14,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:14,507 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:14,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:03:14,518 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:14,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:14,530 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:14,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:14,541 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:14,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:14,549 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:14,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:14,557 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:14,966 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 92 [2021-06-05 05:03:14,966 INFO L628 ElimStorePlain]: treesize reduction 1303, result has 17.3 percent of original size [2021-06-05 05:03:14,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:03:14,972 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:15,084 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 05:03:15,084 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:15,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:15,090 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:15,198 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 05:03:15,198 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:15,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:15,203 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:15,207 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:15,208 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:15,295 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:15,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:15,300 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:15,383 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:15,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:15,388 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:15,469 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:15,470 INFO L518 ElimStorePlain]: Eliminatee v_prenex_713 vanished before elimination [2021-06-05 05:03:15,470 INFO L518 ElimStorePlain]: Eliminatee v_prenex_715 vanished before elimination [2021-06-05 05:03:15,470 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:03:15,470 INFO L518 ElimStorePlain]: Eliminatee v_prenex_717 vanished before elimination [2021-06-05 05:03:15,470 INFO L518 ElimStorePlain]: Eliminatee v_prenex_709 vanished before elimination [2021-06-05 05:03:15,470 INFO L518 ElimStorePlain]: Eliminatee v_prenex_711 vanished before elimination [2021-06-05 05:03:15,472 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:03:15,472 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1691, output treesize:144 [2021-06-05 05:03:15,611 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-06-05 05:03:15,756 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-06-05 05:03:15,931 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2021-06-05 05:03:16,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:16,005 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869300624] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:16,005 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:16,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:03:16,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607115548] [2021-06-05 05:03:16,006 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:03:16,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:16,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:03:16,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:03:16,006 INFO L87 Difference]: Start difference. First operand 375 states and 1180 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:16,470 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 65 [2021-06-05 05:03:16,862 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 134 [2021-06-05 05:03:17,180 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2021-06-05 05:03:17,738 WARN L205 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2021-06-05 05:03:17,946 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 05:03:18,659 WARN L205 SmtUtils]: Spent 678.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 105 [2021-06-05 05:03:18,935 WARN L205 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 05:03:19,666 WARN L205 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 108 [2021-06-05 05:03:19,995 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2021-06-05 05:03:20,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:20,036 INFO L93 Difference]: Finished difference Result 758 states and 2190 transitions. [2021-06-05 05:03:20,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 05:03:20,037 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:03:20,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:20,037 INFO L225 Difference]: With dead ends: 758 [2021-06-05 05:03:20,037 INFO L226 Difference]: Without dead ends: 701 [2021-06-05 05:03:20,038 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 4564.9ms TimeCoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:03:20,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2021-06-05 05:03:20,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 373. [2021-06-05 05:03:20,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 3.1478494623655915) internal successors, (1171), 372 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:20,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1171 transitions. [2021-06-05 05:03:20,046 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1171 transitions. Word has length 20 [2021-06-05 05:03:20,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:20,046 INFO L482 AbstractCegarLoop]: Abstraction has 373 states and 1171 transitions. [2021-06-05 05:03:20,046 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:20,046 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1171 transitions. [2021-06-05 05:03:20,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:03:20,047 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:20,047 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:20,247 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5542 [2021-06-05 05:03:20,247 INFO L430 AbstractCegarLoop]: === Iteration 188 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:20,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:20,248 INFO L82 PathProgramCache]: Analyzing trace with hash -322665892, now seen corresponding path program 39 times [2021-06-05 05:03:20,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:20,248 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575242604] [2021-06-05 05:03:20,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:20,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:20,392 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:20,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575242604] [2021-06-05 05:03:20,392 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575242604] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:20,392 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599617233] [2021-06-05 05:03:20,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:20,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:03:20,419 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:20,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:03:20,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:20,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:20,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:20,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:03:20,986 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:20,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:20,992 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:20,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:03:20,993 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:20,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:20,998 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:03:20,999 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,253 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 94 [2021-06-05 05:03:21,253 INFO L628 ElimStorePlain]: treesize reduction 150, result has 67.9 percent of original size [2021-06-05 05:03:21,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:21,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:21,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:21,260 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,264 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:21,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:21,266 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,375 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-05 05:03:21,375 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:21,380 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:21,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:21,381 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,486 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-05 05:03:21,486 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:21,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:21,491 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:21,491 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:21,492 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,497 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:21,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:21,499 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,603 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 05:03:21,603 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:21,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:21,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:21,609 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,713 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 05:03:21,713 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:21,717 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:21,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:21,719 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:21,827 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2021-06-05 05:03:21,827 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:21,832 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:03:21,832 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:577, output treesize:243 [2021-06-05 05:03:22,028 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2021-06-05 05:03:22,339 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 84 [2021-06-05 05:03:22,594 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_746, v_prenex_748, array_6, v_prenex_750, v_prenex_742, v_prenex_744], 1=[v_prenex_745, v_prenex_747, v_prenex_749, array_3, v_prenex_741, v_prenex_743]} [2021-06-05 05:03:22,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:22,604 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:22,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:22,613 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:22,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:03:22,621 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:22,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:03:22,629 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:22,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:03:22,638 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:22,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:03:22,646 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:22,971 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 86 [2021-06-05 05:03:22,971 INFO L628 ElimStorePlain]: treesize reduction 1196, result has 14.3 percent of original size [2021-06-05 05:03:22,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:22,977 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:23,046 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:23,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:23,052 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:23,118 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:23,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:23,123 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:23,186 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:23,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:23,191 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:23,250 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:23,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:23,255 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:23,313 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:23,313 INFO L518 ElimStorePlain]: Eliminatee v_prenex_745 vanished before elimination [2021-06-05 05:03:23,313 INFO L518 ElimStorePlain]: Eliminatee v_prenex_747 vanished before elimination [2021-06-05 05:03:23,313 INFO L518 ElimStorePlain]: Eliminatee v_prenex_749 vanished before elimination [2021-06-05 05:03:23,313 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:03:23,313 INFO L518 ElimStorePlain]: Eliminatee v_prenex_741 vanished before elimination [2021-06-05 05:03:23,313 INFO L518 ElimStorePlain]: Eliminatee v_prenex_743 vanished before elimination [2021-06-05 05:03:23,315 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:03:23,315 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 18 variables, input treesize:1537, output treesize:107 [2021-06-05 05:03:23,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:23,453 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599617233] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:23,453 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:23,453 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:03:23,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500271512] [2021-06-05 05:03:23,453 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:03:23,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:23,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:03:23,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:03:23,454 INFO L87 Difference]: Start difference. First operand 373 states and 1171 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:23,913 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2021-06-05 05:03:24,220 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2021-06-05 05:03:24,572 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 129 [2021-06-05 05:03:25,046 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 144 [2021-06-05 05:03:25,271 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-06-05 05:03:25,489 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-06-05 05:03:25,656 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-06-05 05:03:25,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:25,674 INFO L93 Difference]: Finished difference Result 565 states and 1689 transitions. [2021-06-05 05:03:25,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 05:03:25,675 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:03:25,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:25,675 INFO L225 Difference]: With dead ends: 565 [2021-06-05 05:03:25,675 INFO L226 Difference]: Without dead ends: 517 [2021-06-05 05:03:25,676 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2687.2ms TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2021-06-05 05:03:25,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-06-05 05:03:25,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 379. [2021-06-05 05:03:25,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.14021164021164) internal successors, (1187), 378 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:25,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1187 transitions. [2021-06-05 05:03:25,680 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1187 transitions. Word has length 20 [2021-06-05 05:03:25,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:25,680 INFO L482 AbstractCegarLoop]: Abstraction has 379 states and 1187 transitions. [2021-06-05 05:03:25,680 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:25,680 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1187 transitions. [2021-06-05 05:03:25,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:03:25,680 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:25,680 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:25,881 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5695 [2021-06-05 05:03:25,881 INFO L430 AbstractCegarLoop]: === Iteration 189 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:25,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:25,881 INFO L82 PathProgramCache]: Analyzing trace with hash -638777248, now seen corresponding path program 40 times [2021-06-05 05:03:25,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:25,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335228506] [2021-06-05 05:03:25,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:26,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:26,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335228506] [2021-06-05 05:03:26,134 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335228506] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:26,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611647653] [2021-06-05 05:03:26,134 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:26,169 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:03:26,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:26,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:03:26,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:27,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:27,074 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:27,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:27,082 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:27,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:27,090 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:27,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,097 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:27,098 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:27,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,104 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:03:27,105 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:27,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:27,112 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:27,594 WARN L205 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2021-06-05 05:03:27,595 INFO L628 ElimStorePlain]: treesize reduction 595, result has 45.6 percent of original size [2021-06-05 05:03:27,600 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:27,601 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:27,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,606 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:03:27,607 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:27,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:27,613 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:27,969 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2021-06-05 05:03:27,969 INFO L628 ElimStorePlain]: treesize reduction 27, result has 93.8 percent of original size [2021-06-05 05:03:27,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,974 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:27,975 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:27,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,980 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:27,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:27,981 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:27,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:27,986 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:28,291 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2021-06-05 05:03:28,292 INFO L628 ElimStorePlain]: treesize reduction 34, result has 91.1 percent of original size [2021-06-05 05:03:28,296 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:28,297 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:28,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:28,298 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:28,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:28,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:28,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:28,303 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:28,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:28,308 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:28,453 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-05 05:03:28,453 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:28,459 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-06-05 05:03:28,460 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:306 [2021-06-05 05:03:28,700 WARN L205 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2021-06-05 05:03:28,896 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_778, v_prenex_768, v_prenex_780, v_prenex_770, array_6, v_prenex_772, v_prenex_774, v_prenex_787, v_prenex_776, v_prenex_766], 1=[v_prenex_767, v_prenex_779, v_prenex_769, array_3, v_prenex_781, v_prenex_771, v_prenex_773, v_prenex_775, v_prenex_765, v_prenex_777]} [2021-06-05 05:03:28,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:28,906 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:29,291 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 98 [2021-06-05 05:03:29,291 INFO L628 ElimStorePlain]: treesize reduction 798, result has 28.7 percent of original size [2021-06-05 05:03:29,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:29,297 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:29,422 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-06-05 05:03:29,422 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:29,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:29,428 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:29,550 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-05 05:03:29,550 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:29,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:29,555 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:29,679 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 05:03:29,679 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:29,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:29,684 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:29,799 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 05:03:29,799 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:29,799 INFO L518 ElimStorePlain]: Eliminatee v_prenex_772 vanished before elimination [2021-06-05 05:03:29,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:29,804 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:29,918 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 05:03:29,918 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:29,918 INFO L518 ElimStorePlain]: Eliminatee v_prenex_787 vanished before elimination [2021-06-05 05:03:29,918 INFO L518 ElimStorePlain]: Eliminatee v_prenex_776 vanished before elimination [2021-06-05 05:03:29,918 INFO L518 ElimStorePlain]: Eliminatee v_prenex_766 vanished before elimination [2021-06-05 05:03:29,918 INFO L518 ElimStorePlain]: Eliminatee v_prenex_767 vanished before elimination [2021-06-05 05:03:29,918 INFO L518 ElimStorePlain]: Eliminatee v_prenex_779 vanished before elimination [2021-06-05 05:03:29,919 INFO L518 ElimStorePlain]: Eliminatee v_prenex_769 vanished before elimination [2021-06-05 05:03:29,919 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:03:29,919 INFO L518 ElimStorePlain]: Eliminatee v_prenex_781 vanished before elimination [2021-06-05 05:03:29,919 INFO L518 ElimStorePlain]: Eliminatee v_prenex_771 vanished before elimination [2021-06-05 05:03:29,919 INFO L518 ElimStorePlain]: Eliminatee v_prenex_773 vanished before elimination [2021-06-05 05:03:29,919 INFO L518 ElimStorePlain]: Eliminatee v_prenex_775 vanished before elimination [2021-06-05 05:03:29,919 INFO L518 ElimStorePlain]: Eliminatee v_prenex_765 vanished before elimination [2021-06-05 05:03:29,919 INFO L518 ElimStorePlain]: Eliminatee v_prenex_777 vanished before elimination [2021-06-05 05:03:29,922 INFO L550 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 20 dim-1 vars, End of recursive call: and 12 xjuncts. [2021-06-05 05:03:29,922 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 30 variables, input treesize:1126, output treesize:239 [2021-06-05 05:03:30,088 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2021-06-05 05:03:30,246 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-06-05 05:03:30,328 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:30,328 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611647653] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:30,328 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:30,328 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:03:30,328 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505876441] [2021-06-05 05:03:30,328 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:03:30,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:30,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:03:30,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:03:30,329 INFO L87 Difference]: Start difference. First operand 379 states and 1187 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:31,067 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 100 [2021-06-05 05:03:31,463 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 132 [2021-06-05 05:03:31,770 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2021-06-05 05:03:32,129 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 96 [2021-06-05 05:03:32,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:32,177 INFO L93 Difference]: Finished difference Result 581 states and 1738 transitions. [2021-06-05 05:03:32,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:03:32,177 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:03:32,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:32,178 INFO L225 Difference]: With dead ends: 581 [2021-06-05 05:03:32,178 INFO L226 Difference]: Without dead ends: 566 [2021-06-05 05:03:32,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2562.7ms TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:03:32,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-06-05 05:03:32,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 379. [2021-06-05 05:03:32,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.14021164021164) internal successors, (1187), 378 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:32,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1187 transitions. [2021-06-05 05:03:32,182 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1187 transitions. Word has length 20 [2021-06-05 05:03:32,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:32,183 INFO L482 AbstractCegarLoop]: Abstraction has 379 states and 1187 transitions. [2021-06-05 05:03:32,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:32,183 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1187 transitions. [2021-06-05 05:03:32,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:03:32,183 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:32,183 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:32,383 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5813,68 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:32,384 INFO L430 AbstractCegarLoop]: === Iteration 190 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:32,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:32,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1957469660, now seen corresponding path program 41 times [2021-06-05 05:03:32,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:32,384 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479307460] [2021-06-05 05:03:32,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:32,550 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:32,551 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:32,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479307460] [2021-06-05 05:03:32,551 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479307460] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:32,551 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281478394] [2021-06-05 05:03:32,551 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:32,577 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 05:03:32,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:32,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 05:03:32,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:32,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:32,797 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:32,801 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:03:32,805 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:32,809 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:32,813 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:32,817 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,821 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:32,821 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:32,825 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:32,829 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:03:32,833 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:32,837 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:03:32,842 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:32,847 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:32,851 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:03:32,862 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:03:32,867 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:32,871 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 2 xjuncts. [2021-06-05 05:03:32,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:03:32,875 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:32,879 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:32,882 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:32,886 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:03:32,890 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:32,894 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:32,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:32,898 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:33,017 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2021-06-05 05:03:33,018 INFO L628 ElimStorePlain]: treesize reduction 272, result has 35.8 percent of original size [2021-06-05 05:03:33,019 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:03:33,019 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 1 variables, input treesize:847, output treesize:152 [2021-06-05 05:03:33,375 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-06-05 05:03:33,520 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-06-05 05:03:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:33,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281478394] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:33,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:33,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 05:03:33,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655893321] [2021-06-05 05:03:33,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:03:33,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:33,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:03:33,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:03:33,594 INFO L87 Difference]: Start difference. First operand 379 states and 1187 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:34,264 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2021-06-05 05:03:34,515 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-05 05:03:34,861 WARN L205 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2021-06-05 05:03:34,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:34,894 INFO L93 Difference]: Finished difference Result 557 states and 1684 transitions. [2021-06-05 05:03:34,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:03:34,894 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:03:34,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:34,895 INFO L225 Difference]: With dead ends: 557 [2021-06-05 05:03:34,895 INFO L226 Difference]: Without dead ends: 535 [2021-06-05 05:03:34,895 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1699.4ms TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:03:34,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-06-05 05:03:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 379. [2021-06-05 05:03:34,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.14021164021164) internal successors, (1187), 378 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1187 transitions. [2021-06-05 05:03:34,899 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1187 transitions. Word has length 20 [2021-06-05 05:03:34,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:34,899 INFO L482 AbstractCegarLoop]: Abstraction has 379 states and 1187 transitions. [2021-06-05 05:03:34,899 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:34,899 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1187 transitions. [2021-06-05 05:03:34,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:03:34,900 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:34,900 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:35,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6027,69 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:35,117 INFO L430 AbstractCegarLoop]: === Iteration 191 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:35,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:35,117 INFO L82 PathProgramCache]: Analyzing trace with hash 266313232, now seen corresponding path program 42 times [2021-06-05 05:03:35,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:35,117 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786668975] [2021-06-05 05:03:35,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:35,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:35,266 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:35,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786668975] [2021-06-05 05:03:35,266 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786668975] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:35,266 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323298686] [2021-06-05 05:03:35,266 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:35,292 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 05:03:35,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:35,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:03:35,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:35,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:35,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:35,871 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,300 WARN L205 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 130 [2021-06-05 05:03:36,301 INFO L628 ElimStorePlain]: treesize reduction 268, result has 64.1 percent of original size [2021-06-05 05:03:36,307 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:36,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:36,308 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,499 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2021-06-05 05:03:36,500 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:36,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:36,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:36,507 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,696 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2021-06-05 05:03:36,696 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:36,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:36,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:36,704 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,890 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2021-06-05 05:03:36,891 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:36,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:36,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:36,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:36,898 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:36,903 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:36,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:36,904 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:37,235 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2021-06-05 05:03:37,236 INFO L628 ElimStorePlain]: treesize reduction 24, result has 94.4 percent of original size [2021-06-05 05:03:37,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:37,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:37,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:37,243 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:37,248 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:37,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:37,249 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:37,413 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 05:03:37,413 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:37,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:37,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:37,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:37,420 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:37,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:37,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:37,425 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:37,577 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 05:03:37,577 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:37,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:37,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:37,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:03:37,584 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:37,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:37,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:37,590 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:37,725 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 05:03:37,725 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:37,733 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-06-05 05:03:37,733 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 16 variables, input treesize:753, output treesize:328 [2021-06-05 05:03:37,947 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 100 [2021-06-05 05:03:38,735 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_811, v_prenex_813, v_prenex_815, v_prenex_817, v_prenex_819, array_6, v_prenex_821], 1=[v_prenex_812, array_0, v_prenex_814, v_prenex_816, v_prenex_818, v_prenex_820, v_prenex_810]} [2021-06-05 05:03:38,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:38,744 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,753 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:38,753 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:38,762 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:38,771 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:03:38,780 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:38,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:38,789 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:39,283 WARN L205 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 105 [2021-06-05 05:03:39,283 INFO L628 ElimStorePlain]: treesize reduction 1609, result has 16.3 percent of original size [2021-06-05 05:03:39,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:39,290 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:39,415 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-06-05 05:03:39,415 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:39,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:39,422 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:39,553 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 05:03:39,553 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:39,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:03:39,559 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:39,678 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-06-05 05:03:39,679 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:39,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:39,685 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:39,803 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-05 05:03:39,804 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:39,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:39,809 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:39,925 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 05:03:39,926 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:39,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:39,931 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:39,935 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:39,935 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:40,028 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:40,028 INFO L518 ElimStorePlain]: Eliminatee v_prenex_812 vanished before elimination [2021-06-05 05:03:40,028 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:03:40,028 INFO L518 ElimStorePlain]: Eliminatee v_prenex_814 vanished before elimination [2021-06-05 05:03:40,028 INFO L518 ElimStorePlain]: Eliminatee v_prenex_816 vanished before elimination [2021-06-05 05:03:40,029 INFO L518 ElimStorePlain]: Eliminatee v_prenex_818 vanished before elimination [2021-06-05 05:03:40,029 INFO L518 ElimStorePlain]: Eliminatee v_prenex_820 vanished before elimination [2021-06-05 05:03:40,029 INFO L518 ElimStorePlain]: Eliminatee v_prenex_810 vanished before elimination [2021-06-05 05:03:40,031 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 14 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 05:03:40,031 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 21 variables, input treesize:2043, output treesize:175 [2021-06-05 05:03:40,192 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-06-05 05:03:40,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:40,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323298686] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:40,368 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:40,368 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:03:40,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202877426] [2021-06-05 05:03:40,368 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:03:40,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:40,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:03:40,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:03:40,368 INFO L87 Difference]: Start difference. First operand 379 states and 1187 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:41,140 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 106 [2021-06-05 05:03:41,521 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 138 [2021-06-05 05:03:41,777 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2021-06-05 05:03:42,181 WARN L205 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2021-06-05 05:03:42,404 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 05:03:42,681 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2021-06-05 05:03:43,098 WARN L205 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2021-06-05 05:03:43,465 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2021-06-05 05:03:43,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:43,534 INFO L93 Difference]: Finished difference Result 676 states and 1970 transitions. [2021-06-05 05:03:43,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:03:43,535 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:03:43,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:43,536 INFO L225 Difference]: With dead ends: 676 [2021-06-05 05:03:43,536 INFO L226 Difference]: Without dead ends: 604 [2021-06-05 05:03:43,536 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 3588.9ms TimeCoverageRelationStatistics Valid=175, Invalid=881, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:03:43,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-06-05 05:03:43,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 379. [2021-06-05 05:03:43,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 378 states have (on average 3.14021164021164) internal successors, (1187), 378 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:43,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 1187 transitions. [2021-06-05 05:03:43,541 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 1187 transitions. Word has length 20 [2021-06-05 05:03:43,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:43,541 INFO L482 AbstractCegarLoop]: Abstraction has 379 states and 1187 transitions. [2021-06-05 05:03:43,541 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:43,541 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 1187 transitions. [2021-06-05 05:03:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:03:43,541 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:43,542 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:43,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6100 [2021-06-05 05:03:43,742 INFO L430 AbstractCegarLoop]: === Iteration 192 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:43,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:43,742 INFO L82 PathProgramCache]: Analyzing trace with hash -917231582, now seen corresponding path program 43 times [2021-06-05 05:03:43,742 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:43,742 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760892638] [2021-06-05 05:03:43,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:43,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:43,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:43,901 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:43,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760892638] [2021-06-05 05:03:43,901 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760892638] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:43,901 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889207519] [2021-06-05 05:03:43,901 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:43,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:03:43,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:44,461 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,462 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:03:44,463 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:44,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,468 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,468 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:03:44,469 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:44,473 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:03:44,475 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:44,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:03:44,481 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:44,485 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:44,485 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:44,490 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:03:44,491 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:44,759 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 66 [2021-06-05 05:03:44,759 INFO L628 ElimStorePlain]: treesize reduction 398, result has 43.5 percent of original size [2021-06-05 05:03:44,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:44,764 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:44,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,768 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:44,769 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:44,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:44,773 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:44,888 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-06-05 05:03:44,888 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:44,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:44,893 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:44,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:44,898 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:44,901 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:44,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:44,903 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,104 WARN L205 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 58 [2021-06-05 05:03:45,105 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.6 percent of original size [2021-06-05 05:03:45,110 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:03:45,111 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:949, output treesize:241 [2021-06-05 05:03:45,501 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_834, v_prenex_836, v_prenex_838, array_6, v_prenex_840, v_prenex_832], 1=[v_prenex_833, v_prenex_835, array_0, v_prenex_837, v_prenex_839, v_prenex_831]} [2021-06-05 05:03:45,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:03:45,512 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:03:45,524 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:03:45,535 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-06-05 05:03:45,547 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-06-05 05:03:45,559 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:45,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:03:45,570 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:46,001 WARN L205 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 93 [2021-06-05 05:03:46,001 INFO L628 ElimStorePlain]: treesize reduction 1309, result has 17.3 percent of original size [2021-06-05 05:03:46,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:46,007 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:46,121 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 05:03:46,121 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:46,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:46,126 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:46,231 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 05:03:46,232 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:46,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:46,237 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:46,341 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 05:03:46,341 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:46,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:46,346 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:46,448 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 05:03:46,448 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:46,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-06-05 05:03:46,453 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:46,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:46,457 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:46,624 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-06-05 05:03:46,624 INFO L628 ElimStorePlain]: treesize reduction 27, result has 87.4 percent of original size [2021-06-05 05:03:46,624 INFO L518 ElimStorePlain]: Eliminatee v_prenex_833 vanished before elimination [2021-06-05 05:03:46,624 INFO L518 ElimStorePlain]: Eliminatee v_prenex_835 vanished before elimination [2021-06-05 05:03:46,624 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:03:46,624 INFO L518 ElimStorePlain]: Eliminatee v_prenex_837 vanished before elimination [2021-06-05 05:03:46,624 INFO L518 ElimStorePlain]: Eliminatee v_prenex_839 vanished before elimination [2021-06-05 05:03:46,624 INFO L518 ElimStorePlain]: Eliminatee v_prenex_831 vanished before elimination [2021-06-05 05:03:46,627 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:03:46,627 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1703, output treesize:140 [2021-06-05 05:03:46,763 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-06-05 05:03:47,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:47,064 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889207519] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:47,064 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:47,064 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:03:47,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939138712] [2021-06-05 05:03:47,065 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:03:47,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:47,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:03:47,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:03:47,065 INFO L87 Difference]: Start difference. First operand 379 states and 1187 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:47,559 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 63 [2021-06-05 05:03:47,940 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 123 [2021-06-05 05:03:48,179 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2021-06-05 05:03:48,473 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2021-06-05 05:03:48,665 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-06-05 05:03:49,049 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2021-06-05 05:03:49,509 WARN L205 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2021-06-05 05:03:49,856 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 69 [2021-06-05 05:03:50,278 WARN L205 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2021-06-05 05:03:50,774 WARN L205 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 91 [2021-06-05 05:03:51,147 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 75 [2021-06-05 05:03:51,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:51,186 INFO L93 Difference]: Finished difference Result 768 states and 2235 transitions. [2021-06-05 05:03:51,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 05:03:51,186 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:03:51,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:51,187 INFO L225 Difference]: With dead ends: 768 [2021-06-05 05:03:51,187 INFO L226 Difference]: Without dead ends: 738 [2021-06-05 05:03:51,187 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 4396.0ms TimeCoverageRelationStatistics Valid=179, Invalid=813, Unknown=0, NotChecked=0, Total=992 [2021-06-05 05:03:51,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-06-05 05:03:51,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 380. [2021-06-05 05:03:51,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 379 states have (on average 3.1451187335092348) internal successors, (1192), 379 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:51,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 1192 transitions. [2021-06-05 05:03:51,193 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 1192 transitions. Word has length 20 [2021-06-05 05:03:51,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:51,194 INFO L482 AbstractCegarLoop]: Abstraction has 380 states and 1192 transitions. [2021-06-05 05:03:51,195 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:51,195 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 1192 transitions. [2021-06-05 05:03:51,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:03:51,195 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:51,195 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:51,396 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6373 [2021-06-05 05:03:51,397 INFO L430 AbstractCegarLoop]: === Iteration 193 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:51,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:51,397 INFO L82 PathProgramCache]: Analyzing trace with hash -2135866942, now seen corresponding path program 44 times [2021-06-05 05:03:51,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:51,397 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159099901] [2021-06-05 05:03:51,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:51,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:51,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:51,567 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:51,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159099901] [2021-06-05 05:03:51,567 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159099901] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:51,567 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675168477] [2021-06-05 05:03:51,568 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:51,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:03:51,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:51,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:03:51,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:52,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:52,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:52,095 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:52,427 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2021-06-05 05:03:52,428 INFO L628 ElimStorePlain]: treesize reduction 186, result has 68.5 percent of original size [2021-06-05 05:03:52,433 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:52,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:52,434 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:52,592 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 05:03:52,592 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:52,597 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:52,598 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:52,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:52,599 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:52,603 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:52,603 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:52,604 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:52,758 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-05 05:03:52,759 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:52,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:52,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:52,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:03:52,765 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:52,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:52,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:03:52,771 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:52,909 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 05:03:52,909 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:52,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:52,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:52,914 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:53,054 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2021-06-05 05:03:53,055 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:53,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:53,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:53,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:53,061 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:53,064 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:53,065 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:53,170 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 05:03:53,170 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:53,177 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:03:53,177 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:597, output treesize:249 [2021-06-05 05:03:53,375 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2021-06-05 05:03:53,629 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_855, v_prenex_857, v_prenex_859, array_6, v_prenex_861, v_prenex_863], 1=[v_prenex_856, v_prenex_858, array_0, v_prenex_860, v_prenex_862, v_prenex_854]} [2021-06-05 05:03:53,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:53,638 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:53,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:03:53,646 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:53,653 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:53,654 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:53,661 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:53,661 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:53,668 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:53,669 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:53,676 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:53,676 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:54,033 WARN L205 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 90 [2021-06-05 05:03:54,033 INFO L628 ElimStorePlain]: treesize reduction 1317, result has 15.0 percent of original size [2021-06-05 05:03:54,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:54,039 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:54,131 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:54,136 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:03:54,137 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:54,225 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:54,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:03:54,230 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:54,316 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:54,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:54,321 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:54,405 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:54,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:54,410 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:54,492 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:54,492 INFO L518 ElimStorePlain]: Eliminatee v_prenex_856 vanished before elimination [2021-06-05 05:03:54,492 INFO L518 ElimStorePlain]: Eliminatee v_prenex_858 vanished before elimination [2021-06-05 05:03:54,492 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:03:54,492 INFO L518 ElimStorePlain]: Eliminatee v_prenex_860 vanished before elimination [2021-06-05 05:03:54,492 INFO L518 ElimStorePlain]: Eliminatee v_prenex_862 vanished before elimination [2021-06-05 05:03:54,492 INFO L518 ElimStorePlain]: Eliminatee v_prenex_854 vanished before elimination [2021-06-05 05:03:54,495 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:03:54,495 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 18 variables, input treesize:1745, output treesize:140 [2021-06-05 05:03:54,637 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-06-05 05:03:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:54,924 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675168477] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:54,924 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:03:54,924 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:03:54,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128765456] [2021-06-05 05:03:54,924 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:03:54,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:03:54,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:03:54,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:03:54,925 INFO L87 Difference]: Start difference. First operand 380 states and 1192 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:55,388 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2021-06-05 05:03:55,769 WARN L205 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 122 [2021-06-05 05:03:56,055 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 64 [2021-06-05 05:03:56,502 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2021-06-05 05:03:56,940 WARN L205 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 81 [2021-06-05 05:03:56,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:03:56,974 INFO L93 Difference]: Finished difference Result 666 states and 1970 transitions. [2021-06-05 05:03:56,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:03:56,975 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:03:56,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:03:56,976 INFO L225 Difference]: With dead ends: 666 [2021-06-05 05:03:56,976 INFO L226 Difference]: Without dead ends: 651 [2021-06-05 05:03:56,976 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2467.4ms TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:03:56,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-06-05 05:03:56,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 381. [2021-06-05 05:03:56,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.1526315789473682) internal successors, (1198), 380 states have internal predecessors, (1198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:56,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1198 transitions. [2021-06-05 05:03:56,981 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1198 transitions. Word has length 20 [2021-06-05 05:03:56,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:03:56,981 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 1198 transitions. [2021-06-05 05:03:56,981 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:03:56,981 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1198 transitions. [2021-06-05 05:03:56,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:03:56,982 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:03:56,982 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:03:57,182 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6565 [2021-06-05 05:03:57,182 INFO L430 AbstractCegarLoop]: === Iteration 194 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:03:57,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:03:57,182 INFO L82 PathProgramCache]: Analyzing trace with hash 71828966, now seen corresponding path program 45 times [2021-06-05 05:03:57,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:03:57,183 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887456046] [2021-06-05 05:03:57,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:03:57,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:03:57,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:03:57,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:03:57,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887456046] [2021-06-05 05:03:57,353 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887456046] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:03:57,353 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877846804] [2021-06-05 05:03:57,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:03:57,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:03:57,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:03:57,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:03:57,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:03:58,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:58,014 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:58,018 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,019 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:58,020 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:58,024 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:03:58,026 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:58,030 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,031 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:58,032 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:58,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:58,037 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:58,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:03:58,043 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:58,418 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2021-06-05 05:03:58,418 INFO L628 ElimStorePlain]: treesize reduction 465, result has 47.6 percent of original size [2021-06-05 05:03:58,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:03:58,425 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:58,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:03:58,430 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:58,434 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:58,435 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:58,568 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-05 05:03:58,568 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:58,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,573 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:03:58,574 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:58,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:58,579 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:58,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:03:58,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:58,584 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:58,826 WARN L205 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 61 [2021-06-05 05:03:58,826 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.6 percent of original size [2021-06-05 05:03:58,832 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:03:58,832 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:1003, output treesize:274 [2021-06-05 05:03:59,051 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 97 [2021-06-05 05:03:59,265 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_878, v_prenex_880, array_6, v_prenex_882, v_prenex_874, v_prenex_876], 1=[v_prenex_877, v_prenex_879, array_0, v_prenex_881, v_prenex_873, v_prenex_875]} [2021-06-05 05:03:59,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:03:59,277 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:03:59,287 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,297 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:59,298 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:03:59,308 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,317 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:59,318 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,326 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:03:59,327 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,741 WARN L205 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 98 [2021-06-05 05:03:59,741 INFO L628 ElimStorePlain]: treesize reduction 1380, result has 15.7 percent of original size [2021-06-05 05:03:59,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:59,747 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,852 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-06-05 05:03:59,852 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:59,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:03:59,858 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:03:59,962 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-05 05:03:59,962 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:03:59,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:03:59,968 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:00,070 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 05:04:00,070 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:00,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:00,075 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:00,174 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:00,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:04:00,179 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:00,276 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:00,276 INFO L518 ElimStorePlain]: Eliminatee v_prenex_877 vanished before elimination [2021-06-05 05:04:00,276 INFO L518 ElimStorePlain]: Eliminatee v_prenex_879 vanished before elimination [2021-06-05 05:04:00,276 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:04:00,276 INFO L518 ElimStorePlain]: Eliminatee v_prenex_881 vanished before elimination [2021-06-05 05:04:00,277 INFO L518 ElimStorePlain]: Eliminatee v_prenex_873 vanished before elimination [2021-06-05 05:04:00,277 INFO L518 ElimStorePlain]: Eliminatee v_prenex_875 vanished before elimination [2021-06-05 05:04:00,280 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:04:00,280 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 18 variables, input treesize:1811, output treesize:194 [2021-06-05 05:04:00,444 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-06-05 05:04:00,669 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2021-06-05 05:04:00,824 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-06-05 05:04:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:04:00,912 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877846804] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:00,912 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:04:00,912 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:04:00,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000436584] [2021-06-05 05:04:00,912 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:04:00,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:04:00,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:04:00,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:04:00,913 INFO L87 Difference]: Start difference. First operand 381 states and 1198 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:01,734 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 129 [2021-06-05 05:04:02,016 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2021-06-05 05:04:02,379 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-06-05 05:04:02,767 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2021-06-05 05:04:03,169 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2021-06-05 05:04:03,581 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 85 [2021-06-05 05:04:04,021 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 90 [2021-06-05 05:04:04,471 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 83 [2021-06-05 05:04:04,931 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 93 [2021-06-05 05:04:05,078 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-06-05 05:04:05,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:04:05,136 INFO L93 Difference]: Finished difference Result 932 states and 2632 transitions. [2021-06-05 05:04:05,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 05:04:05,137 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:04:05,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:04:05,138 INFO L225 Difference]: With dead ends: 932 [2021-06-05 05:04:05,138 INFO L226 Difference]: Without dead ends: 860 [2021-06-05 05:04:05,138 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 4763.5ms TimeCoverageRelationStatistics Valid=211, Invalid=979, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:04:05,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-06-05 05:04:05,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 385. [2021-06-05 05:04:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.1666666666666665) internal successors, (1216), 384 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:05,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1216 transitions. [2021-06-05 05:04:05,146 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1216 transitions. Word has length 20 [2021-06-05 05:04:05,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:04:05,146 INFO L482 AbstractCegarLoop]: Abstraction has 385 states and 1216 transitions. [2021-06-05 05:04:05,146 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:05,146 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1216 transitions. [2021-06-05 05:04:05,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:04:05,147 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:04:05,147 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:04:05,364 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6717 [2021-06-05 05:04:05,365 INFO L430 AbstractCegarLoop]: === Iteration 195 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:04:05,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:04:05,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1115297082, now seen corresponding path program 46 times [2021-06-05 05:04:05,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:04:05,365 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510898809] [2021-06-05 05:04:05,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:04:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:04:05,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:04:05,576 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:04:05,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510898809] [2021-06-05 05:04:05,576 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510898809] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:05,576 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083946139] [2021-06-05 05:04:05,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:05,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:04:05,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:04:05,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:04:05,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:04:06,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:06,238 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:06,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:06,240 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:06,246 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:06,247 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:06,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:04:06,248 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:06,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:06,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:06,256 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:06,627 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 111 [2021-06-05 05:04:06,628 INFO L628 ElimStorePlain]: treesize reduction 203, result has 66.4 percent of original size [2021-06-05 05:04:06,633 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:06,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:06,635 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:06,802 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-06-05 05:04:06,802 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:06,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:06,808 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:06,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:06,809 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:06,814 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:06,815 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:06,950 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-05 05:04:06,951 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:06,955 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:06,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:06,956 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:07,090 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 05:04:07,090 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:07,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:07,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:07,096 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:07,228 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 05:04:07,229 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:07,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:07,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:07,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:04:07,235 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:07,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:07,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:07,241 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:07,362 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 05:04:07,363 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:07,369 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:04:07,369 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:633, output treesize:276 [2021-06-05 05:04:07,586 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2021-06-05 05:04:07,847 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_899, v_prenex_901, v_prenex_903, v_prenex_905, array_6, v_prenex_897], 1=[v_prenex_900, v_prenex_902, array_0, v_prenex_904, v_prenex_896, v_prenex_898]} [2021-06-05 05:04:07,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:07,856 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:07,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:04:07,867 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:07,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:04:07,876 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:07,884 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:07,885 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:07,892 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:07,893 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:07,901 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:07,901 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:08,359 WARN L205 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 102 [2021-06-05 05:04:08,359 INFO L628 ElimStorePlain]: treesize reduction 1345, result has 18.4 percent of original size [2021-06-05 05:04:08,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:08,365 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:08,498 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-05 05:04:08,499 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:08,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:04:08,505 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:08,634 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 05:04:08,635 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:08,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-06-05 05:04:08,641 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:08,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:04:08,646 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:08,854 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 81 [2021-06-05 05:04:08,855 INFO L628 ElimStorePlain]: treesize reduction 30, result has 88.4 percent of original size [2021-06-05 05:04:08,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:08,860 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:08,960 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 05:04:08,961 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:08,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:04:08,966 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:09,064 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:09,065 INFO L518 ElimStorePlain]: Eliminatee v_prenex_900 vanished before elimination [2021-06-05 05:04:09,065 INFO L518 ElimStorePlain]: Eliminatee v_prenex_902 vanished before elimination [2021-06-05 05:04:09,065 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:04:09,065 INFO L518 ElimStorePlain]: Eliminatee v_prenex_904 vanished before elimination [2021-06-05 05:04:09,065 INFO L518 ElimStorePlain]: Eliminatee v_prenex_896 vanished before elimination [2021-06-05 05:04:09,065 INFO L518 ElimStorePlain]: Eliminatee v_prenex_898 vanished before elimination [2021-06-05 05:04:09,068 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:04:09,068 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1817, output treesize:194 [2021-06-05 05:04:09,236 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-06-05 05:04:09,405 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-06-05 05:04:09,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:04:09,627 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083946139] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:09,627 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:04:09,627 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:04:09,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557027043] [2021-06-05 05:04:09,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:04:09,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:04:09,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:04:09,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:04:09,628 INFO L87 Difference]: Start difference. First operand 385 states and 1216 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:10,109 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 64 [2021-06-05 05:04:10,515 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 135 [2021-06-05 05:04:10,788 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-06-05 05:04:11,450 WARN L205 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2021-06-05 05:04:12,143 WARN L205 SmtUtils]: Spent 615.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2021-06-05 05:04:12,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:04:12,177 INFO L93 Difference]: Finished difference Result 685 states and 2029 transitions. [2021-06-05 05:04:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:04:12,177 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:04:12,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:04:12,178 INFO L225 Difference]: With dead ends: 685 [2021-06-05 05:04:12,178 INFO L226 Difference]: Without dead ends: 670 [2021-06-05 05:04:12,178 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 3162.8ms TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:04:12,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2021-06-05 05:04:12,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 383. [2021-06-05 05:04:12,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.1518324607329844) internal successors, (1204), 382 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:12,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1204 transitions. [2021-06-05 05:04:12,183 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1204 transitions. Word has length 20 [2021-06-05 05:04:12,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:04:12,183 INFO L482 AbstractCegarLoop]: Abstraction has 383 states and 1204 transitions. [2021-06-05 05:04:12,183 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:12,183 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1204 transitions. [2021-06-05 05:04:12,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:04:12,184 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:04:12,184 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:04:12,384 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6918,74 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:12,385 INFO L430 AbstractCegarLoop]: === Iteration 196 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:04:12,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:04:12,385 INFO L82 PathProgramCache]: Analyzing trace with hash -82608552, now seen corresponding path program 47 times [2021-06-05 05:04:12,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:04:12,385 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882634266] [2021-06-05 05:04:12,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:04:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:04:12,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:04:12,575 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:04:12,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882634266] [2021-06-05 05:04:12,575 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882634266] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:12,575 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72304262] [2021-06-05 05:04:12,575 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:12,601 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:04:12,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:04:12,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:04:12,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:04:12,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:04:12,770 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:04:12,775 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:04:12,780 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:04:12,785 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:04:12,790 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:04:12,795 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:04:12,800 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:04:12,805 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:04:12,810 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:04:12,815 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:04:12,820 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:04:12,825 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:04:12,830 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:04:12,834 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:04:12,839 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 05:04:12,844 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:04:12,848 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:04:12,853 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:04:12,858 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:04:12,862 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-06-05 05:04:12,867 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:04:12,872 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2021-06-05 05:04:12,877 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:04:12,882 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 05:04:12,887 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:04:12,891 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:04:12,896 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:04:12,901 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:04:12,905 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:04:12,910 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:04:12,915 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:04:12,919 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:04:12,924 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:04:12,928 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:04:12,933 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:12,937 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:04:12,938 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:13,130 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2021-06-05 05:04:13,131 INFO L628 ElimStorePlain]: treesize reduction 447, result has 32.0 percent of original size [2021-06-05 05:04:13,132 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:04:13,133 INFO L247 ElimStorePlain]: Needed 37 recursive calls to eliminate 1 variables, input treesize:1981, output treesize:210 [2021-06-05 05:04:13,482 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2021-06-05 05:04:13,665 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-06-05 05:04:13,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:04:13,851 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72304262] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:13,851 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:04:13,851 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 05:04:13,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458690850] [2021-06-05 05:04:13,852 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:04:13,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:04:13,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:04:13,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:04:13,852 INFO L87 Difference]: Start difference. First operand 383 states and 1204 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:14,656 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 05:04:15,220 WARN L205 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 87 [2021-06-05 05:04:15,600 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2021-06-05 05:04:15,748 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 63 [2021-06-05 05:04:16,015 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2021-06-05 05:04:16,238 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 05:04:16,518 WARN L205 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2021-06-05 05:04:16,925 WARN L205 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2021-06-05 05:04:17,281 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2021-06-05 05:04:17,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:04:17,334 INFO L93 Difference]: Finished difference Result 715 states and 2080 transitions. [2021-06-05 05:04:17,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 05:04:17,334 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:04:17,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:04:17,335 INFO L225 Difference]: With dead ends: 715 [2021-06-05 05:04:17,335 INFO L226 Difference]: Without dead ends: 643 [2021-06-05 05:04:17,335 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 3891.0ms TimeCoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:04:17,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-06-05 05:04:17,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 383. [2021-06-05 05:04:17,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 382 states have (on average 3.1518324607329844) internal successors, (1204), 382 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:17,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 1204 transitions. [2021-06-05 05:04:17,340 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 1204 transitions. Word has length 20 [2021-06-05 05:04:17,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:04:17,340 INFO L482 AbstractCegarLoop]: Abstraction has 383 states and 1204 transitions. [2021-06-05 05:04:17,340 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:17,340 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 1204 transitions. [2021-06-05 05:04:17,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:04:17,341 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:04:17,341 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:04:17,541 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7088 [2021-06-05 05:04:17,542 INFO L430 AbstractCegarLoop]: === Iteration 197 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:04:17,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:04:17,542 INFO L82 PathProgramCache]: Analyzing trace with hash 213400338, now seen corresponding path program 48 times [2021-06-05 05:04:17,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:04:17,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907648875] [2021-06-05 05:04:17,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:04:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:04:17,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:04:17,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:04:17,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907648875] [2021-06-05 05:04:17,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907648875] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:17,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698641247] [2021-06-05 05:04:17,697 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:17,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 05:04:17,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:04:17,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:04:17,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:04:18,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,233 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:04:18,234 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:04:18,240 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,245 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:04:18,246 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,251 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:18,252 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,257 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:18,258 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,263 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:04:18,264 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,624 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2021-06-05 05:04:18,624 INFO L628 ElimStorePlain]: treesize reduction 496, result has 44.3 percent of original size [2021-06-05 05:04:18,628 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:18,630 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,634 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:18,636 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,639 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:04:18,641 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,920 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2021-06-05 05:04:18,920 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.7 percent of original size [2021-06-05 05:04:18,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,925 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:04:18,926 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,930 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:18,932 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:18,935 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:18,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:18,936 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:19,164 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2021-06-05 05:04:19,165 INFO L628 ElimStorePlain]: treesize reduction 33, result has 89.5 percent of original size [2021-06-05 05:04:19,171 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:04:19,171 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:1003, output treesize:265 [2021-06-05 05:04:19,568 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2021-06-05 05:04:19,757 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_922, v_prenex_924, v_prenex_916, v_prenex_918, array_6, v_prenex_920], 1=[v_prenex_921, v_prenex_923, array_0, v_prenex_915, v_prenex_917, v_prenex_919]} [2021-06-05 05:04:19,766 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-06-05 05:04:19,767 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:19,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-06-05 05:04:19,776 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:19,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:04:19,785 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:19,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:04:19,794 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:19,802 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:04:19,803 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:19,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:04:19,812 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:20,227 WARN L205 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 95 [2021-06-05 05:04:20,228 INFO L628 ElimStorePlain]: treesize reduction 1431, result has 17.1 percent of original size [2021-06-05 05:04:20,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:04:20,234 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:20,350 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-05 05:04:20,350 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:20,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:20,355 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:20,469 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 05:04:20,470 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:20,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:20,475 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:20,479 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:20,480 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:20,574 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:20,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:20,579 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:20,669 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:20,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:20,674 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:20,762 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:20,762 INFO L518 ElimStorePlain]: Eliminatee v_prenex_921 vanished before elimination [2021-06-05 05:04:20,762 INFO L518 ElimStorePlain]: Eliminatee v_prenex_923 vanished before elimination [2021-06-05 05:04:20,762 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:04:20,762 INFO L518 ElimStorePlain]: Eliminatee v_prenex_915 vanished before elimination [2021-06-05 05:04:20,762 INFO L518 ElimStorePlain]: Eliminatee v_prenex_917 vanished before elimination [2021-06-05 05:04:20,762 INFO L518 ElimStorePlain]: Eliminatee v_prenex_919 vanished before elimination [2021-06-05 05:04:20,765 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:04:20,765 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1851, output treesize:168 [2021-06-05 05:04:20,920 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 34 [2021-06-05 05:04:21,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:04:21,141 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [698641247] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:21,142 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:04:21,142 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:04:21,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700028704] [2021-06-05 05:04:21,142 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:04:21,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:04:21,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:04:21,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:04:21,142 INFO L87 Difference]: Start difference. First operand 383 states and 1204 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:21,976 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 127 [2021-06-05 05:04:22,595 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 134 [2021-06-05 05:04:23,177 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-06-05 05:04:23,363 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-06-05 05:04:23,700 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 05:04:23,909 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2021-06-05 05:04:24,247 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2021-06-05 05:04:24,653 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 85 [2021-06-05 05:04:24,886 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-06-05 05:04:24,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:04:24,948 INFO L93 Difference]: Finished difference Result 737 states and 2136 transitions. [2021-06-05 05:04:24,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 05:04:24,948 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:04:24,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:04:24,949 INFO L225 Difference]: With dead ends: 737 [2021-06-05 05:04:24,949 INFO L226 Difference]: Without dead ends: 692 [2021-06-05 05:04:24,950 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 4145.6ms TimeCoverageRelationStatistics Valid=184, Invalid=938, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 05:04:24,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2021-06-05 05:04:24,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 381. [2021-06-05 05:04:24,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 380 states have (on average 3.15) internal successors, (1197), 380 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:24,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 1197 transitions. [2021-06-05 05:04:24,954 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 1197 transitions. Word has length 20 [2021-06-05 05:04:24,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:04:24,954 INFO L482 AbstractCegarLoop]: Abstraction has 381 states and 1197 transitions. [2021-06-05 05:04:24,955 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:24,955 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 1197 transitions. [2021-06-05 05:04:24,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:04:24,955 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:04:24,955 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:04:25,156 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7137 [2021-06-05 05:04:25,156 INFO L430 AbstractCegarLoop]: === Iteration 198 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:04:25,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:04:25,156 INFO L82 PathProgramCache]: Analyzing trace with hash 937121676, now seen corresponding path program 49 times [2021-06-05 05:04:25,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:04:25,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510103278] [2021-06-05 05:04:25,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:04:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:04:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:04:25,354 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:04:25,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510103278] [2021-06-05 05:04:25,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510103278] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:25,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036021776] [2021-06-05 05:04:25,354 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:04:25,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 05:04:25,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:04:25,624 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:25,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:25,625 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:25,856 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2021-06-05 05:04:25,857 INFO L628 ElimStorePlain]: treesize reduction 153, result has 66.6 percent of original size [2021-06-05 05:04:25,861 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:25,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:25,862 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:25,970 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-05 05:04:25,971 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:25,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:25,987 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:25,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:25,988 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:25,993 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:25,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:25,995 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:26,204 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2021-06-05 05:04:26,205 INFO L628 ElimStorePlain]: treesize reduction 26, result has 90.4 percent of original size [2021-06-05 05:04:26,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:26,209 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:26,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:04:26,210 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:26,214 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:26,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:04:26,215 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:26,290 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:26,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:26,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:26,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:04:26,295 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:26,298 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:26,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:26,299 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:26,371 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:26,374 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:26,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:26,375 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:26,445 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:26,450 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:04:26,450 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:465, output treesize:168 [2021-06-05 05:04:26,590 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2021-06-05 05:04:27,227 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:04:27,228 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036021776] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:27,228 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:04:27,228 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:04:27,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369834596] [2021-06-05 05:04:27,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:04:27,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:04:27,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:04:27,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:04:27,228 INFO L87 Difference]: Start difference. First operand 381 states and 1197 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:27,738 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2021-06-05 05:04:28,163 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 124 [2021-06-05 05:04:28,693 WARN L205 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 131 [2021-06-05 05:04:29,232 WARN L205 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 142 [2021-06-05 05:04:29,797 WARN L205 SmtUtils]: Spent 510.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 147 [2021-06-05 05:04:30,390 WARN L205 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 152 [2021-06-05 05:04:30,874 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 143 [2021-06-05 05:04:30,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:04:30,913 INFO L93 Difference]: Finished difference Result 701 states and 2039 transitions. [2021-06-05 05:04:30,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 05:04:30,914 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:04:30,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:04:30,915 INFO L225 Difference]: With dead ends: 701 [2021-06-05 05:04:30,915 INFO L226 Difference]: Without dead ends: 647 [2021-06-05 05:04:30,915 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 4088.7ms TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2021-06-05 05:04:30,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2021-06-05 05:04:30,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 385. [2021-06-05 05:04:30,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 384 states have (on average 3.1536458333333335) internal successors, (1211), 384 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:30,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 1211 transitions. [2021-06-05 05:04:30,919 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 1211 transitions. Word has length 20 [2021-06-05 05:04:30,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:04:30,920 INFO L482 AbstractCegarLoop]: Abstraction has 385 states and 1211 transitions. [2021-06-05 05:04:30,920 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:30,920 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 1211 transitions. [2021-06-05 05:04:30,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:04:30,920 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:04:30,920 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:04:31,120 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7271,77 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:31,121 INFO L430 AbstractCegarLoop]: === Iteration 199 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:04:31,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:04:31,121 INFO L82 PathProgramCache]: Analyzing trace with hash 844201320, now seen corresponding path program 50 times [2021-06-05 05:04:31,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:04:31,121 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301515302] [2021-06-05 05:04:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:04:31,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:04:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:04:31,285 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:04:31,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301515302] [2021-06-05 05:04:31,286 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301515302] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:31,286 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481000447] [2021-06-05 05:04:31,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:31,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:04:31,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:04:31,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:04:31,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:04:31,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:31,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:31,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:04:31,732 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:31,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:31,737 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:31,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:31,738 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:31,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:31,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:31,745 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:32,042 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 97 [2021-06-05 05:04:32,043 INFO L628 ElimStorePlain]: treesize reduction 156, result has 69.3 percent of original size [2021-06-05 05:04:32,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:32,048 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:32,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:32,049 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:32,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:32,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:04:32,055 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:32,187 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-05 05:04:32,188 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:32,192 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:32,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:32,193 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:32,325 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-05 05:04:32,325 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:32,330 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:32,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:32,331 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:32,461 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-05 05:04:32,461 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:32,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:32,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:32,467 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:32,595 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 05:04:32,595 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:32,600 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:32,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:32,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:04:32,602 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:32,606 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:32,607 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:32,707 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:32,713 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:04:32,713 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:537, output treesize:215 [2021-06-05 05:04:32,892 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2021-06-05 05:04:33,206 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 178 DAG size of output: 94 [2021-06-05 05:04:33,600 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 84 [2021-06-05 05:04:33,830 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_977, v_prenex_979, array_6, v_prenex_971, v_prenex_973, v_prenex_975], 1=[v_prenex_976, v_prenex_978, array_3, v_prenex_970, v_prenex_972, v_prenex_974]} [2021-06-05 05:04:33,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:33,844 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:33,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:04:33,857 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:33,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:04:33,871 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:33,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:33,885 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:33,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:04:33,897 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:33,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:04:33,908 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:34,250 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 83 [2021-06-05 05:04:34,251 INFO L628 ElimStorePlain]: treesize reduction 1246, result has 13.0 percent of original size [2021-06-05 05:04:34,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:34,257 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:34,326 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:34,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:34,331 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:34,398 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:34,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:34,403 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:34,468 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:34,475 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:04:34,476 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:34,537 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:34,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:34,542 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:34,601 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:34,601 INFO L518 ElimStorePlain]: Eliminatee v_prenex_976 vanished before elimination [2021-06-05 05:04:34,601 INFO L518 ElimStorePlain]: Eliminatee v_prenex_978 vanished before elimination [2021-06-05 05:04:34,601 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:04:34,601 INFO L518 ElimStorePlain]: Eliminatee v_prenex_970 vanished before elimination [2021-06-05 05:04:34,601 INFO L518 ElimStorePlain]: Eliminatee v_prenex_972 vanished before elimination [2021-06-05 05:04:34,601 INFO L518 ElimStorePlain]: Eliminatee v_prenex_974 vanished before elimination [2021-06-05 05:04:34,603 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:04:34,603 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 18 variables, input treesize:1537, output treesize:107 [2021-06-05 05:04:34,740 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:04:34,740 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481000447] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:34,740 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:04:34,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:04:34,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572367523] [2021-06-05 05:04:34,741 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:04:34,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:04:34,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:04:34,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:04:34,741 INFO L87 Difference]: Start difference. First operand 385 states and 1211 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:35,342 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 121 [2021-06-05 05:04:36,137 WARN L205 SmtUtils]: Spent 673.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 160 [2021-06-05 05:04:36,653 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 134 [2021-06-05 05:04:37,527 WARN L205 SmtUtils]: Spent 775.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 168 [2021-06-05 05:04:37,687 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2021-06-05 05:04:38,118 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 137 [2021-06-05 05:04:39,274 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 216 DAG size of output: 182 [2021-06-05 05:04:39,475 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2021-06-05 05:04:39,851 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 132 [2021-06-05 05:04:40,809 WARN L205 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 186 [2021-06-05 05:04:40,959 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2021-06-05 05:04:41,344 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 135 [2021-06-05 05:04:42,350 WARN L205 SmtUtils]: Spent 921.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 189 [2021-06-05 05:04:43,233 WARN L205 SmtUtils]: Spent 816.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 178 [2021-06-05 05:04:43,401 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2021-06-05 05:04:43,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:04:43,466 INFO L93 Difference]: Finished difference Result 827 states and 2425 transitions. [2021-06-05 05:04:43,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-06-05 05:04:43,467 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:04:43,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:04:43,468 INFO L225 Difference]: With dead ends: 827 [2021-06-05 05:04:43,468 INFO L226 Difference]: Without dead ends: 764 [2021-06-05 05:04:43,468 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 9107.5ms TimeCoverageRelationStatistics Valid=263, Invalid=1069, Unknown=0, NotChecked=0, Total=1332 [2021-06-05 05:04:43,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-06-05 05:04:43,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 392. [2021-06-05 05:04:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 391 states have (on average 3.1585677749360612) internal successors, (1235), 391 states have internal predecessors, (1235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:43,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1235 transitions. [2021-06-05 05:04:43,473 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1235 transitions. Word has length 20 [2021-06-05 05:04:43,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:04:43,473 INFO L482 AbstractCegarLoop]: Abstraction has 392 states and 1235 transitions. [2021-06-05 05:04:43,473 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:43,473 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1235 transitions. [2021-06-05 05:04:43,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:04:43,474 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:04:43,474 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:04:43,674 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7333 [2021-06-05 05:04:43,675 INFO L430 AbstractCegarLoop]: === Iteration 200 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:04:43,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:04:43,675 INFO L82 PathProgramCache]: Analyzing trace with hash 637193638, now seen corresponding path program 51 times [2021-06-05 05:04:43,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:04:43,675 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648739579] [2021-06-05 05:04:43,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:04:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:04:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:04:43,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:04:43,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648739579] [2021-06-05 05:04:43,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648739579] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:43,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128185300] [2021-06-05 05:04:43,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:44,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 05:04:44,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:04:44,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:04:44,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:04:44,352 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,353 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:04:44,354 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:44,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,359 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:04:44,360 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:44,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:44,366 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:44,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:44,372 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:44,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:04:44,378 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:44,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:04:44,383 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:44,614 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 59 [2021-06-05 05:04:44,614 INFO L628 ElimStorePlain]: treesize reduction 373, result has 41.8 percent of original size [2021-06-05 05:04:44,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:04:44,620 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:44,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,623 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:44,624 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:44,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:44,628 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:44,721 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:44,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:04:44,726 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:44,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,730 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:04:44,731 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:44,735 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:44,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:44,736 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:44,877 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2021-06-05 05:04:44,878 INFO L628 ElimStorePlain]: treesize reduction 29, result has 85.1 percent of original size [2021-06-05 05:04:44,881 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2021-06-05 05:04:44,881 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:751, output treesize:142 [2021-06-05 05:04:45,026 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 63 [2021-06-05 05:04:45,681 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_998, v_prenex_988, v_prenex_990, array_6, v_prenex_992, v_prenex_1004, v_prenex_994, v_prenex_996], 1=[v_prenex_987, v_prenex_999, v_prenex_989, array_3, v_prenex_991, v_prenex_993, v_prenex_995, v_prenex_997]} [2021-06-05 05:04:45,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:04:45,689 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:45,990 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 82 [2021-06-05 05:04:45,991 INFO L628 ElimStorePlain]: treesize reduction 644, result has 28.7 percent of original size [2021-06-05 05:04:45,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:45,996 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:46,092 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:46,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:04:46,096 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:46,189 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:46,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:46,194 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:46,285 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:46,285 INFO L518 ElimStorePlain]: Eliminatee v_prenex_992 vanished before elimination [2021-06-05 05:04:46,285 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1004 vanished before elimination [2021-06-05 05:04:46,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:46,290 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:46,379 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:46,379 INFO L518 ElimStorePlain]: Eliminatee v_prenex_996 vanished before elimination [2021-06-05 05:04:46,379 INFO L518 ElimStorePlain]: Eliminatee v_prenex_987 vanished before elimination [2021-06-05 05:04:46,379 INFO L518 ElimStorePlain]: Eliminatee v_prenex_999 vanished before elimination [2021-06-05 05:04:46,379 INFO L518 ElimStorePlain]: Eliminatee v_prenex_989 vanished before elimination [2021-06-05 05:04:46,379 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:04:46,379 INFO L518 ElimStorePlain]: Eliminatee v_prenex_991 vanished before elimination [2021-06-05 05:04:46,379 INFO L518 ElimStorePlain]: Eliminatee v_prenex_993 vanished before elimination [2021-06-05 05:04:46,379 INFO L518 ElimStorePlain]: Eliminatee v_prenex_995 vanished before elimination [2021-06-05 05:04:46,380 INFO L518 ElimStorePlain]: Eliminatee v_prenex_997 vanished before elimination [2021-06-05 05:04:46,382 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 16 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:04:46,382 INFO L247 ElimStorePlain]: Needed 6 recursive calls to eliminate 24 variables, input treesize:910, output treesize:183 [2021-06-05 05:04:46,514 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2021-06-05 05:04:46,733 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:04:46,733 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128185300] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:46,733 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:04:46,733 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:04:46,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198514674] [2021-06-05 05:04:46,734 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:04:46,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:04:46,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:04:46,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:04:46,734 INFO L87 Difference]: Start difference. First operand 392 states and 1235 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:47,252 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 88 [2021-06-05 05:04:47,579 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 102 [2021-06-05 05:04:47,781 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 85 [2021-06-05 05:04:48,045 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 93 [2021-06-05 05:04:48,394 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 111 [2021-06-05 05:04:48,629 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2021-06-05 05:04:49,002 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 105 [2021-06-05 05:04:49,424 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 126 [2021-06-05 05:04:49,735 WARN L205 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 101 [2021-06-05 05:04:50,306 WARN L205 SmtUtils]: Spent 479.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 114 [2021-06-05 05:04:51,023 WARN L205 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 138 [2021-06-05 05:04:51,385 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 126 [2021-06-05 05:04:51,866 WARN L205 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 110 [2021-06-05 05:04:52,456 WARN L205 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 120 [2021-06-05 05:04:53,170 WARN L205 SmtUtils]: Spent 647.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 144 [2021-06-05 05:04:53,531 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 129 [2021-06-05 05:04:54,078 WARN L205 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 116 [2021-06-05 05:04:54,566 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 137 [2021-06-05 05:04:54,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:04:54,598 INFO L93 Difference]: Finished difference Result 997 states and 2849 transitions. [2021-06-05 05:04:54,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-06-05 05:04:54,599 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:04:54,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:04:54,600 INFO L225 Difference]: With dead ends: 997 [2021-06-05 05:04:54,600 INFO L226 Difference]: Without dead ends: 925 [2021-06-05 05:04:54,600 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 8114.1ms TimeCoverageRelationStatistics Valid=307, Invalid=1175, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 05:04:54,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 925 states. [2021-06-05 05:04:54,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 925 to 394. [2021-06-05 05:04:54,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.178117048346056) internal successors, (1249), 393 states have internal predecessors, (1249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:54,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1249 transitions. [2021-06-05 05:04:54,606 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1249 transitions. Word has length 20 [2021-06-05 05:04:54,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:04:54,606 INFO L482 AbstractCegarLoop]: Abstraction has 394 states and 1249 transitions. [2021-06-05 05:04:54,606 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:54,606 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1249 transitions. [2021-06-05 05:04:54,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:04:54,607 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:04:54,607 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:04:54,807 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7444 [2021-06-05 05:04:54,807 INFO L430 AbstractCegarLoop]: === Iteration 201 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:04:54,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:04:54,808 INFO L82 PathProgramCache]: Analyzing trace with hash -2058431408, now seen corresponding path program 52 times [2021-06-05 05:04:54,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:04:54,808 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112572998] [2021-06-05 05:04:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:04:54,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:04:55,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:04:55,045 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:04:55,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112572998] [2021-06-05 05:04:55,046 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112572998] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:55,046 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002751978] [2021-06-05 05:04:55,046 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:04:55,079 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:04:55,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:04:55,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:04:55,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:04:55,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:55,559 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:55,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:04:55,560 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:55,565 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:55,566 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:55,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:55,567 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:55,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:55,572 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:55,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:04:55,573 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:55,577 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:04:55,578 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:55,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:55,583 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:55,583 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:04:55,584 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:55,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:55,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:04:55,590 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:55,841 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2021-06-05 05:04:55,842 INFO L628 ElimStorePlain]: treesize reduction 373, result has 43.3 percent of original size [2021-06-05 05:04:55,845 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:55,846 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:55,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:04:55,847 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:55,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:55,851 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:55,854 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:55,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:04:55,855 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:55,959 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-06-05 05:04:55,959 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:55,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:55,963 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:55,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:55,964 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:55,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:04:55,969 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:55,973 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:04:55,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:04:55,974 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:56,135 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2021-06-05 05:04:56,135 INFO L628 ElimStorePlain]: treesize reduction 32, result has 85.9 percent of original size [2021-06-05 05:04:56,139 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2021-06-05 05:04:56,140 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:805, output treesize:171 [2021-06-05 05:04:56,300 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 67 [2021-06-05 05:04:56,583 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 75 [2021-06-05 05:04:57,034 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1021, array_6, v_prenex_1034, v_prenex_1025, v_prenex_1019, v_prenex_1029], 1=[array_3, v_prenex_1020, v_prenex_1030, v_prenex_1024, v_prenex_1028, v_prenex_1018]} [2021-06-05 05:04:57,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:04:57,042 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:57,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:04:57,061 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:57,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:04:57,069 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:57,284 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 75 [2021-06-05 05:04:57,285 INFO L628 ElimStorePlain]: treesize reduction 420, result has 33.6 percent of original size [2021-06-05 05:04:57,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:04:57,289 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:57,364 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:57,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:57,368 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:57,441 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:57,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:57,445 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:57,516 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:57,517 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1019 vanished before elimination [2021-06-05 05:04:57,520 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:04:57,521 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:04:57,591 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:04:57,591 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:04:57,591 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1020 vanished before elimination [2021-06-05 05:04:57,591 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1030 vanished before elimination [2021-06-05 05:04:57,591 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1024 vanished before elimination [2021-06-05 05:04:57,591 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1028 vanished before elimination [2021-06-05 05:04:57,591 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1018 vanished before elimination [2021-06-05 05:04:57,593 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:04:57,593 INFO L247 ElimStorePlain]: Needed 8 recursive calls to eliminate 18 variables, input treesize:729, output treesize:145 [2021-06-05 05:04:57,788 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:04:57,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002751978] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:04:57,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:04:57,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:04:57,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803204964] [2021-06-05 05:04:57,788 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:04:57,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:04:57,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:04:57,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:04:57,789 INFO L87 Difference]: Start difference. First operand 394 states and 1249 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:04:58,382 WARN L205 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 113 [2021-06-05 05:04:58,685 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 95 [2021-06-05 05:04:59,302 WARN L205 SmtUtils]: Spent 549.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 138 [2021-06-05 05:04:59,815 WARN L205 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 118 [2021-06-05 05:05:00,437 WARN L205 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 140 [2021-06-05 05:05:01,099 WARN L205 SmtUtils]: Spent 599.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 143 [2021-06-05 05:05:01,655 WARN L205 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 123 [2021-06-05 05:05:02,374 WARN L205 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 149 [2021-06-05 05:05:03,170 WARN L205 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 154 [2021-06-05 05:05:03,826 WARN L205 SmtUtils]: Spent 567.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 134 [2021-06-05 05:05:04,616 WARN L205 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 157 [2021-06-05 05:05:05,465 WARN L205 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 160 [2021-06-05 05:05:06,152 WARN L205 SmtUtils]: Spent 607.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 140 [2021-06-05 05:05:07,010 WARN L205 SmtUtils]: Spent 778.00 ms on a formula simplification. DAG size of input: 204 DAG size of output: 163 [2021-06-05 05:05:07,685 WARN L205 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 152 [2021-06-05 05:05:07,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:05:07,759 INFO L93 Difference]: Finished difference Result 960 states and 2756 transitions. [2021-06-05 05:05:07,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:05:07,760 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:05:07,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:05:07,761 INFO L225 Difference]: With dead ends: 960 [2021-06-05 05:05:07,761 INFO L226 Difference]: Without dead ends: 891 [2021-06-05 05:05:07,761 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 10439.7ms TimeCoverageRelationStatistics Valid=273, Invalid=987, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 05:05:07,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2021-06-05 05:05:07,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 406. [2021-06-05 05:05:07,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 405 states have (on average 3.1777777777777776) internal successors, (1287), 405 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 1287 transitions. [2021-06-05 05:05:07,767 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 1287 transitions. Word has length 20 [2021-06-05 05:05:07,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:05:07,767 INFO L482 AbstractCegarLoop]: Abstraction has 406 states and 1287 transitions. [2021-06-05 05:05:07,767 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:07,767 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 1287 transitions. [2021-06-05 05:05:07,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:05:07,768 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:05:07,768 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:05:07,968 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7610,80 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:05:07,968 INFO L430 AbstractCegarLoop]: === Iteration 202 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:05:07,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:05:07,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1265659952, now seen corresponding path program 53 times [2021-06-05 05:05:07,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:05:07,969 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812539653] [2021-06-05 05:05:07,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:05:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:05:08,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:05:08,242 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:05:08,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812539653] [2021-06-05 05:05:08,242 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812539653] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:05:08,242 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560695129] [2021-06-05 05:05:08,242 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:05:08,269 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:05:08,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:05:08,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:05:08,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:05:08,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:05:08,410 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:05:08,415 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:05:08,420 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:08,425 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2021-06-05 05:05:08,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:05:08,430 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:05:08,435 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:05:08,440 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:05:08,445 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:08,449 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:08,454 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:08,459 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:05:08,463 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:08,468 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:08,473 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2021-06-05 05:05:08,477 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:08,482 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:05:08,486 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:08,491 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:05:08,495 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,499 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:05:08,500 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:05:08,504 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:05:08,509 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:05:08,513 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:05:08,518 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,521 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:05:08,522 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:05:08,526 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:05:08,531 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:05:08,535 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:08,539 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:05:08,544 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:08,548 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:05:08,552 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:08,557 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:08,561 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,564 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:05:08,565 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 05:05:08,568 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:08,722 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 32 [2021-06-05 05:05:08,722 INFO L628 ElimStorePlain]: treesize reduction 493, result has 21.1 percent of original size [2021-06-05 05:05:08,723 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-06-05 05:05:08,723 INFO L247 ElimStorePlain]: Needed 37 recursive calls to eliminate 1 variables, input treesize:1501, output treesize:132 [2021-06-05 05:05:09,001 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 35 [2021-06-05 05:05:09,269 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 42 [2021-06-05 05:05:09,413 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 38 [2021-06-05 05:05:09,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:05:09,489 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560695129] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:05:09,489 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:05:09,489 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 05:05:09,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78665563] [2021-06-05 05:05:09,490 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:05:09,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:05:09,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:05:09,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:05:09,490 INFO L87 Difference]: Start difference. First operand 406 states and 1287 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:09,971 WARN L205 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2021-06-05 05:05:10,186 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2021-06-05 05:05:10,550 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 78 [2021-06-05 05:05:10,789 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2021-06-05 05:05:11,175 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 82 [2021-06-05 05:05:11,427 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 05:05:12,223 WARN L205 SmtUtils]: Spent 759.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 112 [2021-06-05 05:05:12,544 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 05:05:13,426 WARN L205 SmtUtils]: Spent 836.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 119 [2021-06-05 05:05:13,775 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2021-06-05 05:05:14,147 WARN L205 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 87 [2021-06-05 05:05:14,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:05:14,148 INFO L93 Difference]: Finished difference Result 945 states and 2710 transitions. [2021-06-05 05:05:14,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 05:05:14,148 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:05:14,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:05:14,149 INFO L225 Difference]: With dead ends: 945 [2021-06-05 05:05:14,149 INFO L226 Difference]: Without dead ends: 915 [2021-06-05 05:05:14,150 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 5205.2ms TimeCoverageRelationStatistics Valid=194, Invalid=862, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:05:14,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2021-06-05 05:05:14,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 400. [2021-06-05 05:05:14,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.1704260651629075) internal successors, (1265), 399 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:14,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1265 transitions. [2021-06-05 05:05:14,156 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1265 transitions. Word has length 20 [2021-06-05 05:05:14,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:05:14,156 INFO L482 AbstractCegarLoop]: Abstraction has 400 states and 1265 transitions. [2021-06-05 05:05:14,156 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:14,156 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1265 transitions. [2021-06-05 05:05:14,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:05:14,157 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:05:14,157 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:05:14,357 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7758,81 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:05:14,357 INFO L430 AbstractCegarLoop]: === Iteration 203 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:05:14,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:05:14,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1330586956, now seen corresponding path program 54 times [2021-06-05 05:05:14,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:05:14,358 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80922481] [2021-06-05 05:05:14,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:05:14,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:05:14,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:05:14,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:05:14,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80922481] [2021-06-05 05:05:14,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80922481] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:05:14,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930084987] [2021-06-05 05:05:14,541 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:05:14,577 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:05:14,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:05:14,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 05:05:14,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:05:15,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:15,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:15,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:15,028 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:15,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:15,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:15,034 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:05:15,035 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:15,041 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:15,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:15,042 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:15,371 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 108 [2021-06-05 05:05:15,371 INFO L628 ElimStorePlain]: treesize reduction 142, result has 72.2 percent of original size [2021-06-05 05:05:15,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:15,377 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:15,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:05:15,378 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:15,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:15,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:15,383 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:15,535 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 05:05:15,535 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:15,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:15,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:15,541 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:15,690 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2021-06-05 05:05:15,690 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:15,695 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:15,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:15,696 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:15,843 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 05:05:15,843 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:15,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:15,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:15,850 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:15,995 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-05 05:05:15,996 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:16,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:16,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:16,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:16,002 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:16,006 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:05:16,007 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:16,120 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 05:05:16,120 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:16,126 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:05:16,127 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:597, output treesize:254 [2021-06-05 05:05:16,322 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 96 [2021-06-05 05:05:16,704 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 100 [2021-06-05 05:05:16,928 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 05:05:17,150 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1060, v_prenex_1070, v_prenex_1062, v_prenex_1072, v_prenex_1064, v_prenex_1074, v_prenex_1085, v_prenex_1066, v_prenex_1076, v_prenex_1068, v_prenex_1078, v_prenex_1058, array_6, v_prenex_1080], 1=[v_prenex_1071, v_prenex_1081, v_prenex_1073, v_prenex_1061, v_prenex_1075, array_3, v_prenex_1063, v_prenex_1077, v_prenex_1065, v_prenex_1079, v_prenex_1057, v_prenex_1067, v_prenex_1059, v_prenex_1069]} [2021-06-05 05:05:17,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-06-05 05:05:17,165 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:17,675 WARN L205 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 263 DAG size of output: 115 [2021-06-05 05:05:17,675 INFO L628 ElimStorePlain]: treesize reduction 1148, result has 24.4 percent of original size [2021-06-05 05:05:17,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:05:17,682 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:17,834 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2021-06-05 05:05:17,835 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:17,835 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1062 vanished before elimination [2021-06-05 05:05:17,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:17,841 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:17,994 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-05 05:05:17,994 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:17,994 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1064 vanished before elimination [2021-06-05 05:05:18,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:05:18,001 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:18,149 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-06-05 05:05:18,150 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:18,150 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1085 vanished before elimination [2021-06-05 05:05:18,150 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1066 vanished before elimination [2021-06-05 05:05:18,150 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1076 vanished before elimination [2021-06-05 05:05:18,155 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:18,156 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:18,299 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-05 05:05:18,299 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:18,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:18,306 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:18,310 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:05:18,311 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:18,432 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 05:05:18,432 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:18,432 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1058 vanished before elimination [2021-06-05 05:05:18,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:18,438 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:18,557 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 05:05:18,558 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:18,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:18,564 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:18,679 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 05:05:18,680 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:18,680 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1071 vanished before elimination [2021-06-05 05:05:18,680 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1081 vanished before elimination [2021-06-05 05:05:18,680 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1073 vanished before elimination [2021-06-05 05:05:18,680 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1061 vanished before elimination [2021-06-05 05:05:18,680 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1075 vanished before elimination [2021-06-05 05:05:18,680 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:05:18,680 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1063 vanished before elimination [2021-06-05 05:05:18,680 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1077 vanished before elimination [2021-06-05 05:05:18,680 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1065 vanished before elimination [2021-06-05 05:05:18,680 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1079 vanished before elimination [2021-06-05 05:05:18,681 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1057 vanished before elimination [2021-06-05 05:05:18,681 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1067 vanished before elimination [2021-06-05 05:05:18,681 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1059 vanished before elimination [2021-06-05 05:05:18,681 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1069 vanished before elimination [2021-06-05 05:05:18,684 INFO L550 ElimStorePlain]: Start of recursive call 1: 14 dim-0 vars, 28 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:05:18,685 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 42 variables, input treesize:1525, output treesize:235 [2021-06-05 05:05:18,893 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2021-06-05 05:05:19,062 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2021-06-05 05:05:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:05:19,160 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930084987] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:05:19,160 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:05:19,160 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:05:19,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327160207] [2021-06-05 05:05:19,160 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:05:19,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:05:19,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:05:19,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:05:19,161 INFO L87 Difference]: Start difference. First operand 400 states and 1265 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:19,829 WARN L205 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 126 [2021-06-05 05:05:20,876 WARN L205 SmtUtils]: Spent 744.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 170 [2021-06-05 05:05:21,061 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2021-06-05 05:05:22,039 WARN L205 SmtUtils]: Spent 895.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 178 [2021-06-05 05:05:22,265 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 75 [2021-06-05 05:05:23,379 WARN L205 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 215 DAG size of output: 193 [2021-06-05 05:05:23,589 WARN L205 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-06-05 05:05:25,242 WARN L205 SmtUtils]: Spent 1.55 s on a formula simplification. DAG size of input: 230 DAG size of output: 206 [2021-06-05 05:05:25,460 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2021-06-05 05:05:27,177 WARN L205 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 240 DAG size of output: 210 [2021-06-05 05:05:27,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:05:27,231 INFO L93 Difference]: Finished difference Result 898 states and 2611 transitions. [2021-06-05 05:05:27,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 05:05:27,231 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:05:27,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:05:27,233 INFO L225 Difference]: With dead ends: 898 [2021-06-05 05:05:27,233 INFO L226 Difference]: Without dead ends: 854 [2021-06-05 05:05:27,233 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 8763.0ms TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2021-06-05 05:05:27,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-06-05 05:05:27,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 400. [2021-06-05 05:05:27,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 3.1779448621553885) internal successors, (1268), 399 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:27,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1268 transitions. [2021-06-05 05:05:27,243 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1268 transitions. Word has length 20 [2021-06-05 05:05:27,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:05:27,243 INFO L482 AbstractCegarLoop]: Abstraction has 400 states and 1268 transitions. [2021-06-05 05:05:27,243 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:27,243 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1268 transitions. [2021-06-05 05:05:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:05:27,244 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:05:27,244 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:05:27,450 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7800,82 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:05:27,451 INFO L430 AbstractCegarLoop]: === Iteration 204 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:05:27,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:05:27,451 INFO L82 PathProgramCache]: Analyzing trace with hash -647803412, now seen corresponding path program 55 times [2021-06-05 05:05:27,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:05:27,451 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933313204] [2021-06-05 05:05:27,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:05:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:05:27,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:05:27,697 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:05:27,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933313204] [2021-06-05 05:05:27,697 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933313204] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:05:27,697 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068305689] [2021-06-05 05:05:27,698 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:05:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:05:27,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:05:27,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:05:28,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:28,170 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:28,175 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:28,177 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:28,182 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:28,184 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:28,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:28,190 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:28,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,196 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:05:28,197 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:28,201 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:28,202 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:28,530 WARN L205 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2021-06-05 05:05:28,530 INFO L628 ElimStorePlain]: treesize reduction 413, result has 45.4 percent of original size [2021-06-05 05:05:28,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:28,536 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:28,540 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:28,542 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:28,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,547 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:28,548 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:28,795 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2021-06-05 05:05:28,795 INFO L628 ElimStorePlain]: treesize reduction 28, result has 90.9 percent of original size [2021-06-05 05:05:28,799 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:28,801 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:28,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:05:28,806 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:28,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:28,811 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:28,812 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:29,000 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2021-06-05 05:05:29,000 INFO L628 ElimStorePlain]: treesize reduction 37, result has 85.0 percent of original size [2021-06-05 05:05:29,005 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2021-06-05 05:05:29,005 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:859, output treesize:200 [2021-06-05 05:05:29,173 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-06-05 05:05:29,737 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-06-05 05:05:30,042 INFO L446 ElimStorePlain]: Different costs {0=[array_6, v_prenex_1100, v_prenex_1102, v_prenex_1104, v_prenex_1106], 1=[array_3, v_prenex_1099, v_prenex_1101, v_prenex_1103, v_prenex_1105]} [2021-06-05 05:05:30,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:05:30,051 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:30,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:30,060 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:30,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:30,069 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:30,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:30,078 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:30,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:05:30,086 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:30,093 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:05:30,093 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:30,469 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 85 [2021-06-05 05:05:30,470 INFO L628 ElimStorePlain]: treesize reduction 1158, result has 18.8 percent of original size [2021-06-05 05:05:30,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:05:30,475 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:30,572 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:30,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:05:30,578 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:30,673 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:30,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:30,679 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:30,769 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:30,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:30,774 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:30,864 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:30,864 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:05:30,864 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1099 vanished before elimination [2021-06-05 05:05:30,864 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1101 vanished before elimination [2021-06-05 05:05:30,865 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1103 vanished before elimination [2021-06-05 05:05:30,865 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1105 vanished before elimination [2021-06-05 05:05:30,867 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:05:30,867 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 15 variables, input treesize:1621, output treesize:184 [2021-06-05 05:05:31,011 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2021-06-05 05:05:31,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:05:31,089 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1068305689] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:05:31,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:05:31,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:05:31,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228240098] [2021-06-05 05:05:31,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:05:31,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:05:31,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:05:31,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:05:31,090 INFO L87 Difference]: Start difference. First operand 400 states and 1268 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:31,620 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 94 [2021-06-05 05:05:31,937 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2021-06-05 05:05:32,210 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 98 [2021-06-05 05:05:32,514 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 96 [2021-06-05 05:05:32,821 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 110 [2021-06-05 05:05:33,426 WARN L205 SmtUtils]: Spent 512.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 116 [2021-06-05 05:05:34,039 WARN L205 SmtUtils]: Spent 523.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 112 [2021-06-05 05:05:34,735 WARN L205 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 134 [2021-06-05 05:05:35,108 WARN L205 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 115 [2021-06-05 05:05:35,449 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 111 [2021-06-05 05:05:35,845 WARN L205 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 126 [2021-06-05 05:05:36,232 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 122 [2021-06-05 05:05:36,614 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 118 [2021-06-05 05:05:37,059 WARN L205 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 133 [2021-06-05 05:05:37,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:05:37,121 INFO L93 Difference]: Finished difference Result 846 states and 2484 transitions. [2021-06-05 05:05:37,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 05:05:37,122 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:05:37,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:05:37,123 INFO L225 Difference]: With dead ends: 846 [2021-06-05 05:05:37,123 INFO L226 Difference]: Without dead ends: 816 [2021-06-05 05:05:37,123 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 6585.7ms TimeCoverageRelationStatistics Valid=223, Invalid=967, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:05:37,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2021-06-05 05:05:37,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 398. [2021-06-05 05:05:37,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.1763224181360203) internal successors, (1261), 397 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1261 transitions. [2021-06-05 05:05:37,129 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1261 transitions. Word has length 20 [2021-06-05 05:05:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:05:37,129 INFO L482 AbstractCegarLoop]: Abstraction has 398 states and 1261 transitions. [2021-06-05 05:05:37,129 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1261 transitions. [2021-06-05 05:05:37,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:05:37,129 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:05:37,129 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:05:37,330 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7896 [2021-06-05 05:05:37,330 INFO L430 AbstractCegarLoop]: === Iteration 205 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:05:37,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:05:37,330 INFO L82 PathProgramCache]: Analyzing trace with hash -51697496, now seen corresponding path program 56 times [2021-06-05 05:05:37,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:05:37,330 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723808419] [2021-06-05 05:05:37,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:05:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:05:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:05:37,484 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:05:37,484 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723808419] [2021-06-05 05:05:37,484 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723808419] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:05:37,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448467042] [2021-06-05 05:05:37,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:05:37,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:05:37,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:05:37,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:05:37,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:05:37,969 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:37,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:37,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:05:37,971 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:37,975 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:37,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:37,976 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:05:37,977 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:37,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:37,982 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:37,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:37,983 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:37,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:37,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:37,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:37,989 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:37,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:37,994 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:37,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:37,995 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:38,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:38,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:38,001 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:38,270 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2021-06-05 05:05:38,271 INFO L628 ElimStorePlain]: treesize reduction 409, result has 41.0 percent of original size [2021-06-05 05:05:38,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:38,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:38,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:05:38,276 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:38,279 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:38,280 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:38,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:38,281 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:38,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:38,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:38,285 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:38,395 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-06-05 05:05:38,395 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:38,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:38,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:38,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:38,400 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:38,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:38,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:38,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:38,405 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:38,408 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:38,409 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:05:38,410 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:38,597 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2021-06-05 05:05:38,597 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.5 percent of original size [2021-06-05 05:05:38,602 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:05:38,603 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:859, output treesize:207 [2021-06-05 05:05:39,327 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 83 [2021-06-05 05:05:39,583 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1130, v_prenex_1132, v_prenex_1134, array_6, v_prenex_1136, v_prenex_1128], 1=[array_3, v_prenex_1131, v_prenex_1133, v_prenex_1135, v_prenex_1127, v_prenex_1129]} [2021-06-05 05:05:39,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:39,592 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:39,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:39,600 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:39,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:39,608 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:39,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:39,617 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:39,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:39,626 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:39,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:05:39,634 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:39,976 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 88 [2021-06-05 05:05:39,976 INFO L628 ElimStorePlain]: treesize reduction 1182, result has 15.3 percent of original size [2021-06-05 05:05:39,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:39,983 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:40,066 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:40,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:40,072 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:40,151 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:40,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:05:40,157 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:40,238 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:40,242 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:40,243 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:40,317 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:40,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:40,322 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:40,325 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:05:40,326 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:40,385 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:40,385 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:05:40,386 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1131 vanished before elimination [2021-06-05 05:05:40,386 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1133 vanished before elimination [2021-06-05 05:05:40,386 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1135 vanished before elimination [2021-06-05 05:05:40,386 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1127 vanished before elimination [2021-06-05 05:05:40,386 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1129 vanished before elimination [2021-06-05 05:05:40,387 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:05:40,387 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1495, output treesize:107 [2021-06-05 05:05:40,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:05:40,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448467042] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:05:40,523 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:05:40,523 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:05:40,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892337626] [2021-06-05 05:05:40,523 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:05:40,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:05:40,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:05:40,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:05:40,523 INFO L87 Difference]: Start difference. First operand 398 states and 1261 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:41,124 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 116 [2021-06-05 05:05:41,697 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 123 [2021-06-05 05:05:42,613 WARN L205 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 129 [2021-06-05 05:05:42,812 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2021-06-05 05:05:43,698 WARN L205 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 146 [2021-06-05 05:05:44,050 WARN L205 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 128 [2021-06-05 05:05:44,195 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2021-06-05 05:05:44,621 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 143 [2021-06-05 05:05:45,004 WARN L205 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 132 [2021-06-05 05:05:45,171 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2021-06-05 05:05:45,640 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 147 [2021-06-05 05:05:46,036 WARN L205 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 135 [2021-06-05 05:05:46,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:05:46,091 INFO L93 Difference]: Finished difference Result 865 states and 2520 transitions. [2021-06-05 05:05:46,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 05:05:46,091 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:05:46,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:05:46,092 INFO L225 Difference]: With dead ends: 865 [2021-06-05 05:05:46,092 INFO L226 Difference]: Without dead ends: 802 [2021-06-05 05:05:46,092 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 5846.2ms TimeCoverageRelationStatistics Valid=220, Invalid=970, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:05:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-06-05 05:05:46,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 404. [2021-06-05 05:05:46,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 3.176178660049628) internal successors, (1280), 403 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:46,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1280 transitions. [2021-06-05 05:05:46,098 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 1280 transitions. Word has length 20 [2021-06-05 05:05:46,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:05:46,098 INFO L482 AbstractCegarLoop]: Abstraction has 404 states and 1280 transitions. [2021-06-05 05:05:46,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:46,098 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 1280 transitions. [2021-06-05 05:05:46,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:05:46,099 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:05:46,099 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:05:46,299 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8031,84 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:05:46,299 INFO L430 AbstractCegarLoop]: === Iteration 206 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:05:46,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:05:46,300 INFO L82 PathProgramCache]: Analyzing trace with hash -367808852, now seen corresponding path program 57 times [2021-06-05 05:05:46,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:05:46,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129234454] [2021-06-05 05:05:46,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:05:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:05:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:05:46,523 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:05:46,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129234454] [2021-06-05 05:05:46,523 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129234454] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:05:46,523 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [200752816] [2021-06-05 05:05:46,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:05:46,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:05:46,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:05:46,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:05:46,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:05:47,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,059 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:47,060 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:47,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:05:47,067 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:47,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,072 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:05:47,073 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:47,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,079 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,079 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:47,080 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:47,085 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:05:47,087 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:47,092 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:05:47,093 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:47,384 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2021-06-05 05:05:47,384 INFO L628 ElimStorePlain]: treesize reduction 414, result has 41.4 percent of original size [2021-06-05 05:05:47,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:47,390 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:47,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:47,395 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:47,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:47,400 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:47,597 WARN L205 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2021-06-05 05:05:47,597 INFO L628 ElimStorePlain]: treesize reduction 37, result has 86.1 percent of original size [2021-06-05 05:05:47,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:47,602 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:47,605 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:47,606 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:47,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:47,610 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:47,610 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:47,704 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:47,709 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2021-06-05 05:05:47,709 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:859, output treesize:200 [2021-06-05 05:05:47,874 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2021-06-05 05:05:48,379 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 83 [2021-06-05 05:05:48,679 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1151, v_prenex_1153, array_6, v_prenex_1155, v_prenex_1157], 1=[v_prenex_1150, array_3, v_prenex_1152, v_prenex_1154, v_prenex_1156]} [2021-06-05 05:05:48,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:48,689 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:48,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:48,698 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:48,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:48,706 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:48,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:05:48,715 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:48,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:05:48,724 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:48,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:48,740 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:49,125 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 85 [2021-06-05 05:05:49,125 INFO L628 ElimStorePlain]: treesize reduction 1286, result has 18.0 percent of original size [2021-06-05 05:05:49,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:49,131 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:49,240 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 05:05:49,241 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:49,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:49,246 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:49,354 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 05:05:49,354 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:49,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:05:49,359 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:49,465 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 05:05:49,465 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:49,470 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:49,471 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:49,575 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 05:05:49,575 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:49,575 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1150 vanished before elimination [2021-06-05 05:05:49,575 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:05:49,576 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1152 vanished before elimination [2021-06-05 05:05:49,576 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1154 vanished before elimination [2021-06-05 05:05:49,576 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1156 vanished before elimination [2021-06-05 05:05:49,578 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:05:49,579 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 15 variables, input treesize:1729, output treesize:216 [2021-06-05 05:05:49,745 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-06-05 05:05:49,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:05:49,922 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [200752816] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:05:49,923 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:05:49,923 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:05:49,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518403263] [2021-06-05 05:05:49,923 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:05:49,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:05:49,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:05:49,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:05:49,923 INFO L87 Difference]: Start difference. First operand 404 states and 1280 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:50,434 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 93 [2021-06-05 05:05:50,722 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 89 [2021-06-05 05:05:51,118 WARN L205 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 98 [2021-06-05 05:05:51,412 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 93 [2021-06-05 05:05:52,050 WARN L205 SmtUtils]: Spent 546.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 124 [2021-06-05 05:05:52,623 WARN L205 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 118 [2021-06-05 05:05:53,185 WARN L205 SmtUtils]: Spent 498.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 121 [2021-06-05 05:05:53,537 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 111 [2021-06-05 05:05:54,111 WARN L205 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 124 [2021-06-05 05:05:54,716 WARN L205 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 128 [2021-06-05 05:05:54,999 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 110 [2021-06-05 05:05:55,374 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 118 [2021-06-05 05:05:55,994 WARN L205 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 131 [2021-06-05 05:05:56,300 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 113 [2021-06-05 05:05:56,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:05:56,426 INFO L93 Difference]: Finished difference Result 925 states and 2644 transitions. [2021-06-05 05:05:56,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 05:05:56,426 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:05:56,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:05:56,427 INFO L225 Difference]: With dead ends: 925 [2021-06-05 05:05:56,427 INFO L226 Difference]: Without dead ends: 853 [2021-06-05 05:05:56,428 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 7058.0ms TimeCoverageRelationStatistics Valid=221, Invalid=969, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:05:56,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-06-05 05:05:56,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 398. [2021-06-05 05:05:56,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 397 states have (on average 3.1763224181360203) internal successors, (1261), 397 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 1261 transitions. [2021-06-05 05:05:56,433 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 1261 transitions. Word has length 20 [2021-06-05 05:05:56,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:05:56,433 INFO L482 AbstractCegarLoop]: Abstraction has 398 states and 1261 transitions. [2021-06-05 05:05:56,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:05:56,434 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 1261 transitions. [2021-06-05 05:05:56,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:05:56,434 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:05:56,434 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:05:56,646 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8182 [2021-06-05 05:05:56,646 INFO L430 AbstractCegarLoop]: === Iteration 207 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:05:56,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:05:56,647 INFO L82 PathProgramCache]: Analyzing trace with hash 1043679718, now seen corresponding path program 58 times [2021-06-05 05:05:56,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:05:56,647 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266013291] [2021-06-05 05:05:56,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:05:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:05:56,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:05:56,938 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:05:56,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266013291] [2021-06-05 05:05:56,938 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266013291] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:05:56,938 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671319666] [2021-06-05 05:05:56,938 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:05:56,965 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:05:56,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:05:56,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:05:56,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:05:57,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:57,416 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:57,421 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,422 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:57,423 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:57,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:57,429 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:57,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:05:57,436 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:57,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,441 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:57,442 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:57,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:57,454 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:57,708 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 62 [2021-06-05 05:05:57,709 INFO L628 ElimStorePlain]: treesize reduction 407, result has 41.2 percent of original size [2021-06-05 05:05:57,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:05:57,714 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:57,718 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,719 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:57,720 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:57,724 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:05:57,724 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:57,806 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:57,809 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,810 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:57,811 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:57,814 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,815 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:05:57,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:05:57,816 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:57,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:57,820 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:57,895 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:57,899 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2021-06-05 05:05:57,899 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:805, output treesize:156 [2021-06-05 05:05:58,051 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2021-06-05 05:05:58,374 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1170, array_6, v_prenex_1166, v_prenex_1168], 1=[array_3, v_prenex_1165, v_prenex_1167, v_prenex_1169]} [2021-06-05 05:05:58,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:05:58,382 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:58,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:58,390 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:58,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:58,398 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:58,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:05:58,405 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:58,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:05:58,412 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:58,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:05:58,419 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:58,719 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 71 [2021-06-05 05:05:58,720 INFO L628 ElimStorePlain]: treesize reduction 923, result has 20.3 percent of original size [2021-06-05 05:05:58,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:58,725 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:58,818 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:58,822 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:05:58,823 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:58,917 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:58,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:05:58,921 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:05:59,007 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:05:59,007 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:05:59,007 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1165 vanished before elimination [2021-06-05 05:05:59,007 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1167 vanished before elimination [2021-06-05 05:05:59,007 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1169 vanished before elimination [2021-06-05 05:05:59,010 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 10 xjuncts. [2021-06-05 05:05:59,010 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:1324, output treesize:174 [2021-06-05 05:05:59,151 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 [2021-06-05 05:05:59,382 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2021-06-05 05:05:59,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:05:59,462 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671319666] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:05:59,462 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:05:59,462 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:05:59,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927636976] [2021-06-05 05:05:59,463 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:05:59,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:05:59,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:05:59,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:05:59,463 INFO L87 Difference]: Start difference. First operand 398 states and 1261 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:00,073 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 110 [2021-06-05 05:06:00,369 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 92 [2021-06-05 05:06:00,725 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 115 [2021-06-05 05:06:01,007 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2021-06-05 05:06:01,618 WARN L205 SmtUtils]: Spent 517.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 130 [2021-06-05 05:06:01,937 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 106 [2021-06-05 05:06:02,530 WARN L205 SmtUtils]: Spent 548.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 138 [2021-06-05 05:06:03,194 WARN L205 SmtUtils]: Spent 589.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 138 [2021-06-05 05:06:03,583 WARN L205 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 132 [2021-06-05 05:06:04,074 WARN L205 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 114 [2021-06-05 05:06:04,776 WARN L205 SmtUtils]: Spent 636.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 148 [2021-06-05 05:06:05,192 WARN L205 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 140 [2021-06-05 05:06:05,889 WARN L205 SmtUtils]: Spent 631.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 143 [2021-06-05 05:06:06,503 WARN L205 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 119 [2021-06-05 05:06:07,295 WARN L205 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 179 DAG size of output: 153 [2021-06-05 05:06:07,716 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 142 [2021-06-05 05:06:08,468 WARN L205 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 149 [2021-06-05 05:06:09,090 WARN L205 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 141 [2021-06-05 05:06:09,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:06:09,132 INFO L93 Difference]: Finished difference Result 1117 states and 3163 transitions. [2021-06-05 05:06:09,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-05 05:06:09,132 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:06:09,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:06:09,133 INFO L225 Difference]: With dead ends: 1117 [2021-06-05 05:06:09,133 INFO L226 Difference]: Without dead ends: 1045 [2021-06-05 05:06:09,134 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 9865.1ms TimeCoverageRelationStatistics Valid=303, Invalid=1179, Unknown=0, NotChecked=0, Total=1482 [2021-06-05 05:06:09,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2021-06-05 05:06:09,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 402. [2021-06-05 05:06:09,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 3.197007481296758) internal successors, (1282), 401 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1282 transitions. [2021-06-05 05:06:09,140 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1282 transitions. Word has length 20 [2021-06-05 05:06:09,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:06:09,140 INFO L482 AbstractCegarLoop]: Abstraction has 402 states and 1282 transitions. [2021-06-05 05:06:09,140 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:09,140 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1282 transitions. [2021-06-05 05:06:09,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:06:09,141 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:06:09,141 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:06:09,341 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8375,86 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:06:09,341 INFO L430 AbstractCegarLoop]: === Iteration 208 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:06:09,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:06:09,342 INFO L82 PathProgramCache]: Analyzing trace with hash 2032740266, now seen corresponding path program 59 times [2021-06-05 05:06:09,342 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:06:09,342 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167242804] [2021-06-05 05:06:09,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:06:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:06:09,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:06:09,493 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:06:09,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167242804] [2021-06-05 05:06:09,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167242804] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:06:09,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984948926] [2021-06-05 05:06:09,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:06:09,519 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:06:09,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:06:09,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:06:09,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:06:09,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:06:09,650 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:06:09,654 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:06:09,659 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:06:09,663 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:09,667 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:06:09,672 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:06:09,676 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:06:09,680 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,684 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:06:09,685 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:06:09,690 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:09,694 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:06:09,699 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:06:09,703 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:09,708 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:06:09,712 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:06:09,716 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,720 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2021-06-05 05:06:09,721 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:06:09,725 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:06:09,730 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:06:09,734 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:06:09,739 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,742 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:06:09,743 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:06:09,747 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:09,752 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:06:09,756 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:06:09,760 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:09,764 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:06:09,769 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:06:09,773 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,777 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:06:09,777 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,781 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:06:09,781 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:09,785 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,789 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:06:09,789 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,792 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:06:09,793 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:06:09,797 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 05:06:09,801 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:09,925 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2021-06-05 05:06:09,925 INFO L628 ElimStorePlain]: treesize reduction 348, result has 26.3 percent of original size [2021-06-05 05:06:09,927 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-06-05 05:06:09,927 INFO L247 ElimStorePlain]: Needed 37 recursive calls to eliminate 1 variables, input treesize:1585, output treesize:124 [2021-06-05 05:06:10,265 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2021-06-05 05:06:10,472 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2021-06-05 05:06:10,636 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2021-06-05 05:06:10,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:06:10,721 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984948926] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:06:10,721 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:06:10,721 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 05:06:10,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935798752] [2021-06-05 05:06:10,721 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:06:10,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:06:10,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:06:10,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:06:10,721 INFO L87 Difference]: Start difference. First operand 402 states and 1282 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:11,111 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2021-06-05 05:06:11,310 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 46 [2021-06-05 05:06:11,516 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2021-06-05 05:06:11,680 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2021-06-05 05:06:12,148 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 68 [2021-06-05 05:06:12,386 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 05:06:12,850 WARN L205 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 80 [2021-06-05 05:06:13,283 WARN L205 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2021-06-05 05:06:13,760 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 83 [2021-06-05 05:06:14,248 WARN L205 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 87 [2021-06-05 05:06:14,719 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 85 [2021-06-05 05:06:15,266 WARN L205 SmtUtils]: Spent 516.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 90 [2021-06-05 05:06:15,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:06:15,312 INFO L93 Difference]: Finished difference Result 977 states and 2825 transitions. [2021-06-05 05:06:15,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:06:15,312 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:06:15,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:06:15,313 INFO L225 Difference]: With dead ends: 977 [2021-06-05 05:06:15,313 INFO L226 Difference]: Without dead ends: 947 [2021-06-05 05:06:15,314 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 4966.6ms TimeCoverageRelationStatistics Valid=211, Invalid=911, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 05:06:15,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2021-06-05 05:06:15,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 403. [2021-06-05 05:06:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 3.2039800995024876) internal successors, (1288), 402 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:15,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 1288 transitions. [2021-06-05 05:06:15,319 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 1288 transitions. Word has length 20 [2021-06-05 05:06:15,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:06:15,320 INFO L482 AbstractCegarLoop]: Abstraction has 403 states and 1288 transitions. [2021-06-05 05:06:15,320 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:15,320 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 1288 transitions. [2021-06-05 05:06:15,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:06:15,320 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:06:15,320 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:06:15,524 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8533 [2021-06-05 05:06:15,525 INFO L430 AbstractCegarLoop]: === Iteration 209 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:06:15,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:06:15,525 INFO L82 PathProgramCache]: Analyzing trace with hash 862551270, now seen corresponding path program 60 times [2021-06-05 05:06:15,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:06:15,525 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571933923] [2021-06-05 05:06:15,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:06:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:06:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:06:15,838 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:06:15,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571933923] [2021-06-05 05:06:15,838 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571933923] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:06:15,838 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694570251] [2021-06-05 05:06:15,838 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:06:15,864 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:06:15,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:06:15,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:06:15,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:06:16,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:16,359 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:16,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:06:16,365 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:16,369 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,370 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:16,371 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:16,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,376 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:16,377 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:16,382 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,383 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:06:16,384 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:16,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:16,390 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:16,701 WARN L205 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2021-06-05 05:06:16,702 INFO L628 ElimStorePlain]: treesize reduction 430, result has 42.8 percent of original size [2021-06-05 05:06:16,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:16,707 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:16,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,711 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:16,712 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:16,716 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:06:16,716 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:16,821 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2021-06-05 05:06:16,821 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:16,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:06:16,826 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:16,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,830 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:16,831 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:16,834 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:16,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:16,835 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:17,023 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 53 [2021-06-05 05:06:17,024 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.5 percent of original size [2021-06-05 05:06:17,029 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:06:17,029 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:859, output treesize:207 [2021-06-05 05:06:17,469 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1181, v_prenex_1183, v_prenex_1185, v_prenex_1187, v_prenex_1189, array_6], 1=[v_prenex_1180, v_prenex_1182, array_3, v_prenex_1184, v_prenex_1186, v_prenex_1188]} [2021-06-05 05:06:17,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:17,478 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:17,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:17,487 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:17,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:17,498 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:17,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:17,507 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:17,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:06:17,517 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:17,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:17,526 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:17,925 WARN L205 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 89 [2021-06-05 05:06:17,926 INFO L628 ElimStorePlain]: treesize reduction 1262, result has 17.4 percent of original size [2021-06-05 05:06:17,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:17,931 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:18,047 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-05 05:06:18,048 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:18,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:06:18,053 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:18,165 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-06-05 05:06:18,165 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:18,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:06:18,171 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:18,278 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 05:06:18,278 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:18,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:18,283 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:18,397 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-05 05:06:18,398 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:18,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-06-05 05:06:18,403 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:18,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:06:18,407 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:18,586 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2021-06-05 05:06:18,586 INFO L628 ElimStorePlain]: treesize reduction 25, result has 87.8 percent of original size [2021-06-05 05:06:18,586 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1180 vanished before elimination [2021-06-05 05:06:18,586 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1182 vanished before elimination [2021-06-05 05:06:18,586 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:06:18,587 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1184 vanished before elimination [2021-06-05 05:06:18,587 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1186 vanished before elimination [2021-06-05 05:06:18,587 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1188 vanished before elimination [2021-06-05 05:06:18,589 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:06:18,589 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1643, output treesize:144 [2021-06-05 05:06:18,731 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-06-05 05:06:18,879 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-06-05 05:06:19,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:06:19,090 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694570251] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:06:19,090 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:06:19,090 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:06:19,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217044658] [2021-06-05 05:06:19,090 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:06:19,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:06:19,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:06:19,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:06:19,091 INFO L87 Difference]: Start difference. First operand 403 states and 1288 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:19,767 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 124 [2021-06-05 05:06:20,240 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 127 [2021-06-05 05:06:20,803 WARN L205 SmtUtils]: Spent 392.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 142 [2021-06-05 05:06:21,617 WARN L205 SmtUtils]: Spent 708.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 157 [2021-06-05 05:06:22,105 WARN L205 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 151 [2021-06-05 05:06:22,979 WARN L205 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 166 [2021-06-05 05:06:23,813 WARN L205 SmtUtils]: Spent 757.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 166 [2021-06-05 05:06:24,834 WARN L205 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 175 [2021-06-05 05:06:24,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:06:24,919 INFO L93 Difference]: Finished difference Result 876 states and 2568 transitions. [2021-06-05 05:06:24,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 05:06:24,919 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:06:24,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:06:24,920 INFO L225 Difference]: With dead ends: 876 [2021-06-05 05:06:24,920 INFO L226 Difference]: Without dead ends: 846 [2021-06-05 05:06:24,921 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 6119.1ms TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:06:24,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2021-06-05 05:06:24,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 401. [2021-06-05 05:06:24,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 3.1975) internal successors, (1279), 400 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 1279 transitions. [2021-06-05 05:06:24,926 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 1279 transitions. Word has length 20 [2021-06-05 05:06:24,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:06:24,927 INFO L482 AbstractCegarLoop]: Abstraction has 401 states and 1279 transitions. [2021-06-05 05:06:24,927 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:24,927 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 1279 transitions. [2021-06-05 05:06:24,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:06:24,927 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:06:24,927 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:06:25,150 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8582 [2021-06-05 05:06:25,150 INFO L430 AbstractCegarLoop]: === Iteration 210 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:06:25,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:06:25,151 INFO L82 PathProgramCache]: Analyzing trace with hash -149030846, now seen corresponding path program 61 times [2021-06-05 05:06:25,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:06:25,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777637477] [2021-06-05 05:06:25,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:06:25,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:06:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:06:25,326 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:06:25,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777637477] [2021-06-05 05:06:25,327 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777637477] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:06:25,327 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675344251] [2021-06-05 05:06:25,327 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:06:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:06:25,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:06:25,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:06:25,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:25,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:25,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:25,912 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:25,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:25,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:25,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:06:25,919 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:25,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:25,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:25,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:25,925 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:25,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:25,931 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:25,931 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:25,932 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:25,937 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:25,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:25,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:25,939 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:25,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:25,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:25,945 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:26,277 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2021-06-05 05:06:26,278 INFO L628 ElimStorePlain]: treesize reduction 533, result has 40.9 percent of original size [2021-06-05 05:06:26,282 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:26,283 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:26,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:26,284 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:26,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:26,289 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:26,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:26,290 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:26,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:26,295 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:26,426 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 05:06:26,426 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:26,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:26,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:26,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:26,432 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:26,437 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:26,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:26,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:26,439 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:26,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:26,444 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:26,568 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-05 05:06:26,569 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:26,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:06:26,574 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:26,578 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:26,579 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:26,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:26,580 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:26,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:26,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:26,585 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:26,794 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2021-06-05 05:06:26,794 INFO L628 ElimStorePlain]: treesize reduction 19, result has 93.3 percent of original size [2021-06-05 05:06:26,800 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-06-05 05:06:26,800 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1009, output treesize:236 [2021-06-05 05:06:26,973 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-06-05 05:06:27,173 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2021-06-05 05:06:27,507 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1218, v_prenex_1209, v_prenex_1211, array_6, v_prenex_1213, v_prenex_1203], 1=[v_prenex_1208, array_3, v_prenex_1210, v_prenex_1202, v_prenex_1212, v_prenex_1214]} [2021-06-05 05:06:27,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:27,515 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:27,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:27,522 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:27,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:06:27,530 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:27,736 WARN L205 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 68 [2021-06-05 05:06:27,736 INFO L628 ElimStorePlain]: treesize reduction 416, result has 32.2 percent of original size [2021-06-05 05:06:27,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:27,741 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:27,814 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:27,814 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1211 vanished before elimination [2021-06-05 05:06:27,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:27,818 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:27,890 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:27,890 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1213 vanished before elimination [2021-06-05 05:06:27,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:27,894 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:27,964 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:27,964 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1208 vanished before elimination [2021-06-05 05:06:27,964 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:06:27,964 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1210 vanished before elimination [2021-06-05 05:06:27,964 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1202 vanished before elimination [2021-06-05 05:06:27,964 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1212 vanished before elimination [2021-06-05 05:06:27,964 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1214 vanished before elimination [2021-06-05 05:06:27,967 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:06:27,967 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 18 variables, input treesize:701, output treesize:145 [2021-06-05 05:06:28,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:06:28,161 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675344251] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:06:28,161 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:06:28,161 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:06:28,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011377188] [2021-06-05 05:06:28,162 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:06:28,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:06:28,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:06:28,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:06:28,162 INFO L87 Difference]: Start difference. First operand 401 states and 1279 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:28,775 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 82 [2021-06-05 05:06:29,108 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 117 [2021-06-05 05:06:29,423 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 113 [2021-06-05 05:06:29,751 WARN L205 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 122 [2021-06-05 05:06:30,025 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 106 [2021-06-05 05:06:30,365 WARN L205 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 125 [2021-06-05 05:06:30,805 WARN L205 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 144 [2021-06-05 05:06:31,112 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 111 [2021-06-05 05:06:31,547 WARN L205 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 139 [2021-06-05 05:06:32,032 WARN L205 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 152 [2021-06-05 05:06:32,361 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 121 [2021-06-05 05:06:32,707 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 122 [2021-06-05 05:06:33,178 WARN L205 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 147 [2021-06-05 05:06:33,486 WARN L205 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 116 [2021-06-05 05:06:33,906 WARN L205 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 128 [2021-06-05 05:06:33,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:06:33,940 INFO L93 Difference]: Finished difference Result 836 states and 2519 transitions. [2021-06-05 05:06:33,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-06-05 05:06:33,941 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:06:33,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:06:33,942 INFO L225 Difference]: With dead ends: 836 [2021-06-05 05:06:33,942 INFO L226 Difference]: Without dead ends: 806 [2021-06-05 05:06:33,942 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 6166.8ms TimeCoverageRelationStatistics Valid=241, Invalid=1019, Unknown=0, NotChecked=0, Total=1260 [2021-06-05 05:06:33,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2021-06-05 05:06:33,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 410. [2021-06-05 05:06:33,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 409 states have (on average 3.2004889975550124) internal successors, (1309), 409 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:33,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 1309 transitions. [2021-06-05 05:06:33,948 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 1309 transitions. Word has length 20 [2021-06-05 05:06:33,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:06:33,948 INFO L482 AbstractCegarLoop]: Abstraction has 410 states and 1309 transitions. [2021-06-05 05:06:33,948 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:33,948 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 1309 transitions. [2021-06-05 05:06:33,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:06:33,949 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:06:33,949 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:06:34,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8756,89 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:06:34,149 INFO L430 AbstractCegarLoop]: === Iteration 211 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:06:34,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:06:34,150 INFO L82 PathProgramCache]: Analyzing trace with hash 643740610, now seen corresponding path program 62 times [2021-06-05 05:06:34,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:06:34,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538011263] [2021-06-05 05:06:34,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:06:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:06:34,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:06:34,563 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:06:34,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538011263] [2021-06-05 05:06:34,563 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538011263] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:06:34,563 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774922764] [2021-06-05 05:06:34,563 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:06:34,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:06:34,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:06:34,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:06:34,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:06:35,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:35,199 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:35,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,205 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:35,206 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:35,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:35,213 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:35,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:06:35,220 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:35,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,226 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:35,227 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:35,232 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:35,234 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:35,571 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2021-06-05 05:06:35,571 INFO L628 ElimStorePlain]: treesize reduction 533, result has 40.9 percent of original size [2021-06-05 05:06:35,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:35,577 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:35,581 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,582 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:35,583 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:35,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:35,588 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:35,717 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 05:06:35,718 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:35,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:06:35,723 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:35,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,728 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:35,729 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:35,734 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:35,735 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:35,950 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2021-06-05 05:06:35,950 INFO L628 ElimStorePlain]: treesize reduction 19, result has 93.8 percent of original size [2021-06-05 05:06:35,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:35,955 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:35,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:35,960 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:35,964 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:35,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:35,965 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:36,065 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:36,071 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-06-05 05:06:36,071 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1009, output treesize:236 [2021-06-05 05:06:36,244 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-06-05 05:06:36,567 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1242, v_prenex_1244, array_6, v_prenex_1234, v_prenex_1236, v_prenex_1249], 1=[array_3, v_prenex_1241, v_prenex_1233, v_prenex_1243, v_prenex_1235, v_prenex_1245]} [2021-06-05 05:06:36,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:36,574 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:36,834 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 75 [2021-06-05 05:06:36,835 INFO L628 ElimStorePlain]: treesize reduction 526, result has 32.0 percent of original size [2021-06-05 05:06:36,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:36,840 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:36,934 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:36,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:06:36,939 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:37,029 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:37,029 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1234 vanished before elimination [2021-06-05 05:06:37,029 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1236 vanished before elimination [2021-06-05 05:06:37,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:37,034 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:37,120 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:37,120 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:06:37,120 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1241 vanished before elimination [2021-06-05 05:06:37,120 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1233 vanished before elimination [2021-06-05 05:06:37,120 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1243 vanished before elimination [2021-06-05 05:06:37,120 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1235 vanished before elimination [2021-06-05 05:06:37,120 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1245 vanished before elimination [2021-06-05 05:06:37,123 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:06:37,123 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 18 variables, input treesize:781, output treesize:180 [2021-06-05 05:06:37,274 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-06-05 05:06:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:06:37,433 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774922764] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:06:37,433 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:06:37,433 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:06:37,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979124324] [2021-06-05 05:06:37,434 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:06:37,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:06:37,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:06:37,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:06:37,434 INFO L87 Difference]: Start difference. First operand 410 states and 1309 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:38,016 WARN L205 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 108 [2021-06-05 05:06:38,485 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 128 [2021-06-05 05:06:38,817 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 104 [2021-06-05 05:06:39,475 WARN L205 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 132 [2021-06-05 05:06:39,850 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 108 [2021-06-05 05:06:40,702 WARN L205 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 160 [2021-06-05 05:06:41,121 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 125 [2021-06-05 05:06:41,517 WARN L205 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 120 [2021-06-05 05:06:42,420 WARN L205 SmtUtils]: Spent 855.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 167 [2021-06-05 05:06:42,873 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 132 [2021-06-05 05:06:43,294 WARN L205 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 127 [2021-06-05 05:06:44,160 WARN L205 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 177 DAG size of output: 162 [2021-06-05 05:06:44,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:06:44,210 INFO L93 Difference]: Finished difference Result 855 states and 2496 transitions. [2021-06-05 05:06:44,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 05:06:44,210 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:06:44,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:06:44,211 INFO L225 Difference]: With dead ends: 855 [2021-06-05 05:06:44,211 INFO L226 Difference]: Without dead ends: 810 [2021-06-05 05:06:44,212 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 7341.9ms TimeCoverageRelationStatistics Valid=195, Invalid=861, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:06:44,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2021-06-05 05:06:44,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 413. [2021-06-05 05:06:44,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 3.2111650485436893) internal successors, (1323), 412 states have internal predecessors, (1323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:44,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1323 transitions. [2021-06-05 05:06:44,218 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1323 transitions. Word has length 20 [2021-06-05 05:06:44,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:06:44,218 INFO L482 AbstractCegarLoop]: Abstraction has 413 states and 1323 transitions. [2021-06-05 05:06:44,218 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:44,218 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1323 transitions. [2021-06-05 05:06:44,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:06:44,219 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:06:44,219 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:06:44,419 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8877,90 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:06:44,419 INFO L430 AbstractCegarLoop]: === Iteration 212 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:06:44,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:06:44,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1336163992, now seen corresponding path program 63 times [2021-06-05 05:06:44,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:06:44,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587243464] [2021-06-05 05:06:44,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:06:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:06:44,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:06:44,747 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:06:44,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587243464] [2021-06-05 05:06:44,747 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587243464] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:06:44,747 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439597760] [2021-06-05 05:06:44,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:06:44,779 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:06:44,779 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:06:44,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:06:44,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:06:45,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,396 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:06:45,398 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:45,403 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,404 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:06:45,405 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:45,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:06:45,412 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:45,417 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,418 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:06:45,419 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:45,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:06:45,426 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:45,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:06:45,433 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:45,740 WARN L205 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 05:06:45,741 INFO L628 ElimStorePlain]: treesize reduction 385, result has 46.6 percent of original size [2021-06-05 05:06:45,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:06:45,746 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:45,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:45,752 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:45,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:45,756 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:45,884 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2021-06-05 05:06:45,884 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:45,888 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,889 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:45,890 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:45,894 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,895 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,895 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:06:45,896 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:45,900 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:45,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:45,902 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:46,109 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2021-06-05 05:06:46,110 INFO L628 ElimStorePlain]: treesize reduction 25, result has 91.0 percent of original size [2021-06-05 05:06:46,115 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:06:46,115 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:919, output treesize:242 [2021-06-05 05:06:46,549 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 85 [2021-06-05 05:06:46,762 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1271, v_prenex_1273, v_prenex_1275, v_prenex_1277, array_6, v_prenex_1269], 1=[v_prenex_1270, array_3, v_prenex_1272, v_prenex_1274, v_prenex_1276, v_prenex_1268]} [2021-06-05 05:06:46,770 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:06:46,771 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:46,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:46,781 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:46,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:46,790 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:46,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:06:46,799 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:46,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:06:46,808 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:46,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:06:46,817 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:47,193 WARN L205 SmtUtils]: Spent 376.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 85 [2021-06-05 05:06:47,194 INFO L628 ElimStorePlain]: treesize reduction 1237, result has 14.2 percent of original size [2021-06-05 05:06:47,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:47,199 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:47,277 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:47,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:47,283 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:47,287 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:06:47,288 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:47,353 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:47,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:47,358 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:47,421 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:47,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:47,426 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:47,488 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:47,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:47,493 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:47,551 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:47,551 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1270 vanished before elimination [2021-06-05 05:06:47,552 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:06:47,552 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1272 vanished before elimination [2021-06-05 05:06:47,552 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1274 vanished before elimination [2021-06-05 05:06:47,552 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1276 vanished before elimination [2021-06-05 05:06:47,552 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1268 vanished before elimination [2021-06-05 05:06:47,553 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:06:47,553 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1579, output treesize:107 [2021-06-05 05:06:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:06:47,688 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439597760] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:06:47,688 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:06:47,688 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:06:47,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409268857] [2021-06-05 05:06:47,688 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:06:47,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:06:47,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:06:47,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:06:47,688 INFO L87 Difference]: Start difference. First operand 413 states and 1323 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:48,226 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2021-06-05 05:06:48,514 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 81 [2021-06-05 05:06:48,962 WARN L205 SmtUtils]: Spent 381.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 138 [2021-06-05 05:06:49,429 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 147 [2021-06-05 05:06:49,781 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2021-06-05 05:06:49,946 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2021-06-05 05:06:50,204 WARN L205 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2021-06-05 05:06:50,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:06:50,262 INFO L93 Difference]: Finished difference Result 646 states and 1960 transitions. [2021-06-05 05:06:50,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:06:50,263 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:06:50,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:06:50,263 INFO L225 Difference]: With dead ends: 646 [2021-06-05 05:06:50,263 INFO L226 Difference]: Without dead ends: 598 [2021-06-05 05:06:50,264 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 3063.3ms TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:06:50,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-06-05 05:06:50,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 419. [2021-06-05 05:06:50,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 3.2033492822966507) internal successors, (1339), 418 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:50,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1339 transitions. [2021-06-05 05:06:50,268 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1339 transitions. Word has length 20 [2021-06-05 05:06:50,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:06:50,268 INFO L482 AbstractCegarLoop]: Abstraction has 419 states and 1339 transitions. [2021-06-05 05:06:50,268 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:50,268 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1339 transitions. [2021-06-05 05:06:50,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:06:50,269 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:06:50,269 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:06:50,469 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8990 [2021-06-05 05:06:50,470 INFO L430 AbstractCegarLoop]: === Iteration 213 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:06:50,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:06:50,470 INFO L82 PathProgramCache]: Analyzing trace with hash -856879316, now seen corresponding path program 64 times [2021-06-05 05:06:50,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:06:50,470 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161754621] [2021-06-05 05:06:50,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:06:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:06:50,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:06:50,745 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:06:50,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161754621] [2021-06-05 05:06:50,745 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161754621] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:06:50,745 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675906754] [2021-06-05 05:06:50,745 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:06:50,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:06:50,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:06:50,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:06:50,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:06:51,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:51,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:51,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:51,470 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:51,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:51,477 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:51,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:51,478 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:51,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:51,486 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:51,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:51,487 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:51,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:51,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:51,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:06:51,496 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:51,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:51,504 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:51,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:51,505 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:51,512 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:51,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:51,513 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:52,019 WARN L205 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 83 [2021-06-05 05:06:52,019 INFO L628 ElimStorePlain]: treesize reduction 607, result has 44.4 percent of original size [2021-06-05 05:06:52,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:52,025 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:52,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:52,026 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:52,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:52,032 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:52,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:52,033 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:52,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:06:52,039 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:52,407 WARN L205 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 77 [2021-06-05 05:06:52,408 INFO L628 ElimStorePlain]: treesize reduction 36, result has 92.0 percent of original size [2021-06-05 05:06:52,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:52,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:52,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:52,415 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:52,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:52,421 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:52,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:52,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:52,427 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:52,750 WARN L205 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2021-06-05 05:06:52,751 INFO L628 ElimStorePlain]: treesize reduction 27, result has 93.0 percent of original size [2021-06-05 05:06:52,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:52,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:52,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:52,757 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:52,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:52,763 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:52,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:06:52,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:52,768 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:52,921 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-05 05:06:52,921 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:52,929 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-06-05 05:06:52,929 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:314 [2021-06-05 05:06:53,179 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2021-06-05 05:06:53,436 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1291, v_prenex_1293, v_prenex_1295, v_prenex_1297, array_6], 1=[v_prenex_1290, v_prenex_1292, array_3, v_prenex_1294, v_prenex_1296]} [2021-06-05 05:06:53,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:53,448 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:53,455 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:06:53,456 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:53,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:06:53,465 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:53,473 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:06:53,473 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:53,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:53,482 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:53,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:06:53,491 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:53,893 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 88 [2021-06-05 05:06:53,893 INFO L628 ElimStorePlain]: treesize reduction 1245, result has 19.3 percent of original size [2021-06-05 05:06:53,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:06:53,899 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:54,016 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 05:06:54,017 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:54,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:06:54,022 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:54,135 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 05:06:54,136 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:54,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:06:54,142 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:54,251 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 05:06:54,251 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:54,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:06:54,256 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:06:54,362 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 05:06:54,362 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:06:54,362 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1290 vanished before elimination [2021-06-05 05:06:54,363 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1292 vanished before elimination [2021-06-05 05:06:54,363 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:06:54,363 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1294 vanished before elimination [2021-06-05 05:06:54,363 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1296 vanished before elimination [2021-06-05 05:06:54,366 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 10 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:06:54,366 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 15 variables, input treesize:1729, output treesize:216 [2021-06-05 05:06:54,533 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-06-05 05:06:54,695 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-06-05 05:06:54,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:06:54,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675906754] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:06:54,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:06:54,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:06:54,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681158766] [2021-06-05 05:06:54,783 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:06:54,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:06:54,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:06:54,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:06:54,783 INFO L87 Difference]: Start difference. First operand 419 states and 1339 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:55,466 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 90 [2021-06-05 05:06:55,905 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 102 [2021-06-05 05:06:56,404 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 131 [2021-06-05 05:06:56,799 WARN L205 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 111 [2021-06-05 05:06:57,076 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 86 [2021-06-05 05:06:57,453 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2021-06-05 05:06:57,742 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2021-06-05 05:06:58,068 WARN L205 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 93 [2021-06-05 05:06:58,261 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2021-06-05 05:06:58,665 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2021-06-05 05:06:58,988 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 95 [2021-06-05 05:06:59,193 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2021-06-05 05:06:59,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:06:59,359 INFO L93 Difference]: Finished difference Result 771 states and 2317 transitions. [2021-06-05 05:06:59,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-06-05 05:06:59,359 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:06:59,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:06:59,360 INFO L225 Difference]: With dead ends: 771 [2021-06-05 05:06:59,360 INFO L226 Difference]: Without dead ends: 699 [2021-06-05 05:06:59,360 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 9 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 4966.6ms TimeCoverageRelationStatistics Valid=203, Invalid=1203, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 05:06:59,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2021-06-05 05:06:59,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 416. [2021-06-05 05:06:59,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 3.207228915662651) internal successors, (1331), 415 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:59,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1331 transitions. [2021-06-05 05:06:59,365 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1331 transitions. Word has length 20 [2021-06-05 05:06:59,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:06:59,365 INFO L482 AbstractCegarLoop]: Abstraction has 416 states and 1331 transitions. [2021-06-05 05:06:59,365 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:06:59,366 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1331 transitions. [2021-06-05 05:06:59,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:06:59,366 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:06:59,366 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:06:59,566 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9137 [2021-06-05 05:06:59,567 INFO L430 AbstractCegarLoop]: === Iteration 214 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:06:59,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:06:59,567 INFO L82 PathProgramCache]: Analyzing trace with hash -321649514, now seen corresponding path program 65 times [2021-06-05 05:06:59,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:06:59,567 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576336932] [2021-06-05 05:06:59,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:06:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:06:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:06:59,731 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:06:59,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576336932] [2021-06-05 05:06:59,731 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576336932] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:06:59,731 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104565647] [2021-06-05 05:06:59,731 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:06:59,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 05:06:59,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:06:59,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:06:59,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:07:00,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:00,009 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:07:00,013 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:07:00,017 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:00,021 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:00,025 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:00,029 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:07:00,033 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:00,037 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:00,041 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:00,045 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:07:00,050 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:00,054 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:00,058 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:00,062 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:07:00,066 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:00,071 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:00,075 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:00,079 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:00,083 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:00,087 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:07:00,092 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:07:00,096 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:00,100 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:00,103 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:00,266 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 41 [2021-06-05 05:07:00,266 INFO L628 ElimStorePlain]: treesize reduction 266, result has 44.6 percent of original size [2021-06-05 05:07:00,267 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 05:07:00,268 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 1 variables, input treesize:1039, output treesize:214 [2021-06-05 05:07:00,662 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-06-05 05:07:00,818 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-06-05 05:07:00,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:00,892 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104565647] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:00,892 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:07:00,892 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 05:07:00,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597467249] [2021-06-05 05:07:00,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:07:00,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:07:00,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:07:00,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:07:00,893 INFO L87 Difference]: Start difference. First operand 416 states and 1331 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:01,707 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2021-06-05 05:07:01,949 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 05:07:02,252 WARN L205 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 05:07:02,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:07:02,288 INFO L93 Difference]: Finished difference Result 650 states and 1967 transitions. [2021-06-05 05:07:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:07:02,289 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:07:02,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:07:02,289 INFO L225 Difference]: With dead ends: 650 [2021-06-05 05:07:02,290 INFO L226 Difference]: Without dead ends: 635 [2021-06-05 05:07:02,290 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1791.1ms TimeCoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:07:02,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-06-05 05:07:02,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 416. [2021-06-05 05:07:02,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 3.207228915662651) internal successors, (1331), 415 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:02,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1331 transitions. [2021-06-05 05:07:02,295 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1331 transitions. Word has length 20 [2021-06-05 05:07:02,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:07:02,295 INFO L482 AbstractCegarLoop]: Abstraction has 416 states and 1331 transitions. [2021-06-05 05:07:02,295 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:02,295 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1331 transitions. [2021-06-05 05:07:02,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:07:02,295 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:07:02,295 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:07:02,495 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9275 [2021-06-05 05:07:02,496 INFO L430 AbstractCegarLoop]: === Iteration 215 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:07:02,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:07:02,496 INFO L82 PathProgramCache]: Analyzing trace with hash -2020369902, now seen corresponding path program 66 times [2021-06-05 05:07:02,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:07:02,496 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726116217] [2021-06-05 05:07:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:07:02,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:07:02,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:02,672 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:07:02,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726116217] [2021-06-05 05:07:02,672 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726116217] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:02,672 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299312533] [2021-06-05 05:07:02,672 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:07:02,699 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:07:02,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:07:02,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:07:02,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:07:03,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:03,521 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:03,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:03,523 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:03,529 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:03,530 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:03,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:03,531 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:03,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:03,538 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:03,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:03,540 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:03,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:03,547 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:03,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:03,548 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:03,555 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:03,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:03,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:03,557 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:03,564 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:03,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:03,565 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:04,044 WARN L205 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 86 [2021-06-05 05:07:04,045 INFO L628 ElimStorePlain]: treesize reduction 657, result has 43.2 percent of original size [2021-06-05 05:07:04,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:04,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:04,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:04,051 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:04,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:04,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:04,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:04,058 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:04,074 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:04,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:04,075 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:04,272 WARN L205 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 05:07:04,273 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:04,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:04,278 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:04,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:04,279 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:04,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:04,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:04,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:04,285 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:04,290 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:04,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:04,291 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:04,673 WARN L205 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 78 [2021-06-05 05:07:04,674 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.8 percent of original size [2021-06-05 05:07:04,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:04,679 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:04,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:04,681 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:04,685 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:04,686 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:04,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:04,687 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:04,691 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:07:04,692 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:04,853 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 05:07:04,853 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:04,862 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-06-05 05:07:04,862 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1273, output treesize:360 [2021-06-05 05:07:05,108 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 102 [2021-06-05 05:07:05,340 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1318, v_prenex_1320, array_6, v_prenex_1322, v_prenex_1324, v_prenex_1316, v_prenex_1326], 1=[v_prenex_1317, array_0, v_prenex_1319, v_prenex_1321, v_prenex_1323, v_prenex_1325, v_prenex_1315]} [2021-06-05 05:07:05,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:05,350 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-06-05 05:07:05,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:05,361 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:05,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:05,371 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:05,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:05,381 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:05,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:05,392 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:05,401 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:07:05,401 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:05,861 WARN L205 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 103 [2021-06-05 05:07:05,861 INFO L628 ElimStorePlain]: treesize reduction 1610, result has 14.5 percent of original size [2021-06-05 05:07:05,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:05,868 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:05,981 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-05 05:07:05,982 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:05,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:05,988 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:06,094 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-06-05 05:07:06,095 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:06,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:07:06,101 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:06,206 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-05 05:07:06,206 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:06,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:06,213 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:06,316 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 05:07:06,316 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:06,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:06,322 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:06,421 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:06,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:06,427 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:06,523 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:06,523 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1317 vanished before elimination [2021-06-05 05:07:06,523 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:07:06,523 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1319 vanished before elimination [2021-06-05 05:07:06,523 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1321 vanished before elimination [2021-06-05 05:07:06,523 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1323 vanished before elimination [2021-06-05 05:07:06,523 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1325 vanished before elimination [2021-06-05 05:07:06,524 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1315 vanished before elimination [2021-06-05 05:07:06,526 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 14 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 05:07:06,526 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 21 variables, input treesize:2043, output treesize:175 [2021-06-05 05:07:06,691 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-06-05 05:07:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:06,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1299312533] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:06,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:07:06,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:07:06,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694267563] [2021-06-05 05:07:06,907 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:07:06,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:07:06,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:07:06,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:07:06,907 INFO L87 Difference]: Start difference. First operand 416 states and 1331 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:07,436 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 105 [2021-06-05 05:07:07,831 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 113 [2021-06-05 05:07:08,419 WARN L205 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 190 [2021-06-05 05:07:08,712 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 81 [2021-06-05 05:07:09,141 WARN L205 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2021-06-05 05:07:09,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:07:09,194 INFO L93 Difference]: Finished difference Result 650 states and 1961 transitions. [2021-06-05 05:07:09,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:07:09,194 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:07:09,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:07:09,195 INFO L225 Difference]: With dead ends: 650 [2021-06-05 05:07:09,195 INFO L226 Difference]: Without dead ends: 628 [2021-06-05 05:07:09,195 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 2863.9ms TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:07:09,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-06-05 05:07:09,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 419. [2021-06-05 05:07:09,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 3.210526315789474) internal successors, (1342), 418 states have internal predecessors, (1342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:09,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1342 transitions. [2021-06-05 05:07:09,200 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1342 transitions. Word has length 20 [2021-06-05 05:07:09,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:07:09,200 INFO L482 AbstractCegarLoop]: Abstraction has 419 states and 1342 transitions. [2021-06-05 05:07:09,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:09,200 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1342 transitions. [2021-06-05 05:07:09,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:07:09,200 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:07:09,200 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:07:09,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9347 [2021-06-05 05:07:09,401 INFO L430 AbstractCegarLoop]: === Iteration 216 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:07:09,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:07:09,402 INFO L82 PathProgramCache]: Analyzing trace with hash 2101349702, now seen corresponding path program 67 times [2021-06-05 05:07:09,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:07:09,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024887368] [2021-06-05 05:07:09,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:07:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:07:09,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:09,630 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:07:09,630 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024887368] [2021-06-05 05:07:09,631 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024887368] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:09,631 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074814016] [2021-06-05 05:07:09,631 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:07:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:07:09,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:07:09,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:07:10,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:10,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:10,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:10,502 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:10,508 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:10,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:10,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:10,510 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:10,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:10,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:10,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:10,517 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:10,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:10,523 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:10,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:10,525 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:10,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:10,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:10,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:10,532 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:10,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:10,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:10,538 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:10,947 WARN L205 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2021-06-05 05:07:10,947 INFO L628 ElimStorePlain]: treesize reduction 579, result has 44.5 percent of original size [2021-06-05 05:07:10,952 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:10,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:10,953 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:07:10,954 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:10,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:10,959 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:10,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:10,961 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:10,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:10,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:10,966 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:11,260 WARN L205 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2021-06-05 05:07:11,261 INFO L628 ElimStorePlain]: treesize reduction 24, result has 94.2 percent of original size [2021-06-05 05:07:11,265 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:11,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:11,266 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:11,267 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:11,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:11,271 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:11,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:11,272 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:11,277 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:11,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:11,278 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:11,418 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 05:07:11,418 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:11,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:11,423 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:11,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:11,424 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:11,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:11,429 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:11,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:11,430 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:11,434 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:11,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:11,435 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:11,569 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2021-06-05 05:07:11,569 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:11,578 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-06-05 05:07:11,578 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:334 [2021-06-05 05:07:11,812 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 95 [2021-06-05 05:07:12,013 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 80 [2021-06-05 05:07:12,174 INFO L446 ElimStorePlain]: Different costs {0=[array_6, v_prenex_1345], 1=[array_0, v_prenex_1344]} [2021-06-05 05:07:12,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:12,179 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:12,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:12,185 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:12,189 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:07:12,189 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:12,193 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:07:12,194 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:12,198 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:07:12,198 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:12,202 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:07:12,203 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:12,334 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2021-06-05 05:07:12,335 INFO L628 ElimStorePlain]: treesize reduction 342, result has 27.2 percent of original size [2021-06-05 05:07:12,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:12,339 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:12,385 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:12,385 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:07:12,385 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1344 vanished before elimination [2021-06-05 05:07:12,387 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 4 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:07:12,387 INFO L247 ElimStorePlain]: Needed 8 recursive calls to eliminate 6 variables, input treesize:672, output treesize:105 [2021-06-05 05:07:12,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:12,541 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074814016] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:12,541 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:07:12,541 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:07:12,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916605024] [2021-06-05 05:07:12,541 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:07:12,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:07:12,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:07:12,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:07:12,541 INFO L87 Difference]: Start difference. First operand 419 states and 1342 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:13,057 WARN L205 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2021-06-05 05:07:13,330 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 99 [2021-06-05 05:07:13,861 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 173 [2021-06-05 05:07:14,570 WARN L205 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 186 [2021-06-05 05:07:14,786 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2021-06-05 05:07:15,009 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2021-06-05 05:07:15,179 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2021-06-05 05:07:15,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:07:15,197 INFO L93 Difference]: Finished difference Result 639 states and 1932 transitions. [2021-06-05 05:07:15,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 05:07:15,197 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:07:15,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:07:15,198 INFO L225 Difference]: With dead ends: 639 [2021-06-05 05:07:15,198 INFO L226 Difference]: Without dead ends: 588 [2021-06-05 05:07:15,198 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 3251.1ms TimeCoverageRelationStatistics Valid=129, Invalid=627, Unknown=0, NotChecked=0, Total=756 [2021-06-05 05:07:15,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-06-05 05:07:15,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 416. [2021-06-05 05:07:15,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 3.207228915662651) internal successors, (1331), 415 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1331 transitions. [2021-06-05 05:07:15,203 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1331 transitions. Word has length 20 [2021-06-05 05:07:15,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:07:15,203 INFO L482 AbstractCegarLoop]: Abstraction has 416 states and 1331 transitions. [2021-06-05 05:07:15,203 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:15,203 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1331 transitions. [2021-06-05 05:07:15,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:07:15,203 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:07:15,204 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:07:15,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9508,95 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:07:15,404 INFO L430 AbstractCegarLoop]: === Iteration 217 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:07:15,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:07:15,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1049441532, now seen corresponding path program 68 times [2021-06-05 05:07:15,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:07:15,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536494973] [2021-06-05 05:07:15,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:07:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:07:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:15,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:07:15,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536494973] [2021-06-05 05:07:15,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536494973] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:15,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54427776] [2021-06-05 05:07:15,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:07:15,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:07:15,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:07:15,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:07:15,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:07:16,689 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:16,690 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:16,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:07:16,692 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:16,698 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:16,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:16,699 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:07:16,700 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:16,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:16,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:07:16,708 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:17,099 WARN L205 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2021-06-05 05:07:17,100 INFO L628 ElimStorePlain]: treesize reduction 116, result has 75.0 percent of original size [2021-06-05 05:07:17,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:17,107 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:17,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:17,108 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:17,114 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:17,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:17,116 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:17,292 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-06-05 05:07:17,292 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:17,299 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:17,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:17,300 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:17,471 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-06-05 05:07:17,472 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:17,478 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:17,479 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:17,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:17,480 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:17,485 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:07:17,486 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:17,623 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 05:07:17,623 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:17,629 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:17,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:17,630 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:17,765 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 05:07:17,765 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:17,771 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:17,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:17,772 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:17,905 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 05:07:17,905 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:17,913 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:07:17,914 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:573, output treesize:239 [2021-06-05 05:07:18,173 WARN L205 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 85 [2021-06-05 05:07:18,537 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 180 DAG size of output: 96 [2021-06-05 05:07:18,787 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 84 [2021-06-05 05:07:19,022 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1370, v_prenex_1372, v_prenex_1374, v_prenex_1376, array_6, v_prenex_1378], 1=[array_3, v_prenex_1371, v_prenex_1373, v_prenex_1375, v_prenex_1377, v_prenex_1369]} [2021-06-05 05:07:19,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:19,031 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:19,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:19,040 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:19,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:19,049 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:19,057 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:07:19,058 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:19,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:19,067 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:19,074 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:07:19,075 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:19,397 WARN L205 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 84 [2021-06-05 05:07:19,398 INFO L628 ElimStorePlain]: treesize reduction 1178, result has 14.1 percent of original size [2021-06-05 05:07:19,403 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:19,404 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:19,474 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:19,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:19,480 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:19,548 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:19,552 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:19,553 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:19,617 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:19,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:19,622 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:19,683 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:19,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:19,688 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:19,748 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:19,748 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:07:19,748 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1371 vanished before elimination [2021-06-05 05:07:19,748 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1373 vanished before elimination [2021-06-05 05:07:19,748 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1375 vanished before elimination [2021-06-05 05:07:19,748 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1377 vanished before elimination [2021-06-05 05:07:19,748 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1369 vanished before elimination [2021-06-05 05:07:19,750 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:07:19,750 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 18 variables, input treesize:1537, output treesize:107 [2021-06-05 05:07:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:19,897 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54427776] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:19,897 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:07:19,897 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:07:19,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388279535] [2021-06-05 05:07:19,898 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:07:19,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:07:19,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:07:19,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:07:19,898 INFO L87 Difference]: Start difference. First operand 416 states and 1331 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:20,411 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2021-06-05 05:07:20,797 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 130 [2021-06-05 05:07:21,654 WARN L205 SmtUtils]: Spent 747.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 170 [2021-06-05 05:07:21,794 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 05:07:22,198 WARN L205 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 135 [2021-06-05 05:07:23,290 WARN L205 SmtUtils]: Spent 991.00 ms on a formula simplification. DAG size of input: 217 DAG size of output: 183 [2021-06-05 05:07:23,472 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 67 [2021-06-05 05:07:23,845 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2021-06-05 05:07:24,011 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 61 [2021-06-05 05:07:24,251 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 80 [2021-06-05 05:07:24,427 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2021-06-05 05:07:24,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:07:24,472 INFO L93 Difference]: Finished difference Result 690 states and 2072 transitions. [2021-06-05 05:07:24,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:07:24,472 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:07:24,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:07:24,473 INFO L225 Difference]: With dead ends: 690 [2021-06-05 05:07:24,473 INFO L226 Difference]: Without dead ends: 627 [2021-06-05 05:07:24,473 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 5421.8ms TimeCoverageRelationStatistics Valid=170, Invalid=886, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:07:24,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-06-05 05:07:24,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 423. [2021-06-05 05:07:24,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 3.2156398104265405) internal successors, (1357), 422 states have internal predecessors, (1357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1357 transitions. [2021-06-05 05:07:24,478 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1357 transitions. Word has length 20 [2021-06-05 05:07:24,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:07:24,478 INFO L482 AbstractCegarLoop]: Abstraction has 423 states and 1357 transitions. [2021-06-05 05:07:24,478 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:24,478 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1357 transitions. [2021-06-05 05:07:24,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:07:24,479 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:07:24,479 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:07:24,694 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9690,96 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:07:24,695 INFO L430 AbstractCegarLoop]: === Iteration 218 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:07:24,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:07:24,695 INFO L82 PathProgramCache]: Analyzing trace with hash 842433850, now seen corresponding path program 69 times [2021-06-05 05:07:24,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:07:24,695 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339673718] [2021-06-05 05:07:24,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:07:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:07:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:24,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:07:24,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339673718] [2021-06-05 05:07:24,859 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339673718] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:24,859 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399345796] [2021-06-05 05:07:24,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:07:24,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-06-05 05:07:24,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:07:24,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:07:24,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:07:25,243 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,244 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:25,245 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:25,249 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,250 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:25,251 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:25,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:25,256 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:25,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,261 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:25,262 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:25,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:25,268 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:25,272 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:25,273 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:25,582 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2021-06-05 05:07:25,582 INFO L628 ElimStorePlain]: treesize reduction 414, result has 44.2 percent of original size [2021-06-05 05:07:25,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,587 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:25,588 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:25,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,593 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:25,594 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:25,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:25,599 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:25,814 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2021-06-05 05:07:25,815 INFO L628 ElimStorePlain]: treesize reduction 34, result has 88.3 percent of original size [2021-06-05 05:07:25,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,819 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:25,820 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:25,824 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,825 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:25,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:25,826 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:25,829 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:07:25,830 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:25,924 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:25,928 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2021-06-05 05:07:25,928 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:841, output treesize:178 [2021-06-05 05:07:26,101 WARN L205 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2021-06-05 05:07:26,652 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1391, v_prenex_1387, array_6, v_prenex_1389], 1=[v_prenex_1390, array_3, v_prenex_1386, v_prenex_1388]} [2021-06-05 05:07:26,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:07:26,660 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:26,666 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:07:26,667 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:26,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:07:26,674 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:26,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:26,681 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:26,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:07:26,689 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:26,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:26,696 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:27,009 WARN L205 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 71 [2021-06-05 05:07:27,009 INFO L628 ElimStorePlain]: treesize reduction 902, result has 22.3 percent of original size [2021-06-05 05:07:27,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:27,014 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:27,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:27,019 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:27,210 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 64 [2021-06-05 05:07:27,211 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.6 percent of original size [2021-06-05 05:07:27,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:27,215 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:27,315 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:27,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:27,319 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:27,411 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:27,411 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1390 vanished before elimination [2021-06-05 05:07:27,411 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:07:27,411 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1386 vanished before elimination [2021-06-05 05:07:27,411 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1388 vanished before elimination [2021-06-05 05:07:27,414 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:07:27,414 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:1357, output treesize:182 [2021-06-05 05:07:27,547 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2021-06-05 05:07:27,698 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2021-06-05 05:07:27,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:27,773 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399345796] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:27,773 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:07:27,773 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:07:27,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90671093] [2021-06-05 05:07:27,773 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:07:27,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:07:27,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:07:27,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:07:27,774 INFO L87 Difference]: Start difference. First operand 423 states and 1357 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:28,233 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2021-06-05 05:07:28,653 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 100 [2021-06-05 05:07:28,956 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 05:07:29,368 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2021-06-05 05:07:29,842 WARN L205 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 82 [2021-06-05 05:07:29,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:07:29,893 INFO L93 Difference]: Finished difference Result 706 states and 2130 transitions. [2021-06-05 05:07:29,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:07:29,893 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:07:29,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:07:29,894 INFO L225 Difference]: With dead ends: 706 [2021-06-05 05:07:29,894 INFO L226 Difference]: Without dead ends: 691 [2021-06-05 05:07:29,894 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2542.3ms TimeCoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:07:29,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2021-06-05 05:07:29,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 421. [2021-06-05 05:07:29,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 3.2142857142857144) internal successors, (1350), 420 states have internal predecessors, (1350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:29,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1350 transitions. [2021-06-05 05:07:29,900 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1350 transitions. Word has length 20 [2021-06-05 05:07:29,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:07:29,900 INFO L482 AbstractCegarLoop]: Abstraction has 421 states and 1350 transitions. [2021-06-05 05:07:29,900 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:29,900 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1350 transitions. [2021-06-05 05:07:29,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:07:29,901 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:07:29,901 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:07:30,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9832 [2021-06-05 05:07:30,101 INFO L430 AbstractCegarLoop]: === Iteration 219 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:07:30,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:07:30,101 INFO L82 PathProgramCache]: Analyzing trace with hash -376201510, now seen corresponding path program 70 times [2021-06-05 05:07:30,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:07:30,102 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253099945] [2021-06-05 05:07:30,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:07:30,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:07:30,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:30,259 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:07:30,259 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253099945] [2021-06-05 05:07:30,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253099945] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:30,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831307185] [2021-06-05 05:07:30,260 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:07:30,286 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:07:30,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:07:30,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:07:30,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:07:30,840 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:30,841 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:30,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:30,842 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:30,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:30,848 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:30,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:30,849 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:30,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:30,856 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:30,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:30,857 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:30,862 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:30,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:30,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:30,864 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:30,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:30,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:30,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:30,871 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:30,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:30,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:30,878 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:31,229 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2021-06-05 05:07:31,230 INFO L628 ElimStorePlain]: treesize reduction 486, result has 41.3 percent of original size [2021-06-05 05:07:31,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:31,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:31,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:31,236 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:31,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:31,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:31,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:31,242 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:31,246 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:31,247 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:31,491 WARN L205 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-06-05 05:07:31,492 INFO L628 ElimStorePlain]: treesize reduction 40, result has 86.9 percent of original size [2021-06-05 05:07:31,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:31,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:31,497 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:31,497 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:31,501 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:31,502 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:31,506 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:31,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:31,507 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:31,621 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 59 [2021-06-05 05:07:31,621 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:31,626 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2021-06-05 05:07:31,626 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:949, output treesize:235 [2021-06-05 05:07:31,852 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2021-06-05 05:07:32,106 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 75 [2021-06-05 05:07:32,331 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1405, v_prenex_1407, array_6, v_prenex_1403], 1=[v_prenex_1406, array_3, v_prenex_1402, v_prenex_1404]} [2021-06-05 05:07:32,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:32,339 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:32,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:32,346 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:32,352 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:07:32,353 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:32,359 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:07:32,360 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:32,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:32,367 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:32,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:32,375 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:32,730 WARN L205 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 78 [2021-06-05 05:07:32,731 INFO L628 ElimStorePlain]: treesize reduction 948, result has 23.5 percent of original size [2021-06-05 05:07:32,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:32,736 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:32,851 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 05:07:32,851 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:32,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:32,856 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:32,969 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-05 05:07:32,969 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:32,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:32,974 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:33,084 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-05 05:07:33,084 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:33,084 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1406 vanished before elimination [2021-06-05 05:07:33,084 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:07:33,084 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1402 vanished before elimination [2021-06-05 05:07:33,084 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1404 vanished before elimination [2021-06-05 05:07:33,087 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:07:33,087 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:1456, output treesize:240 [2021-06-05 05:07:33,244 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2021-06-05 05:07:33,467 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:33,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831307185] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:33,468 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:07:33,468 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:07:33,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904620596] [2021-06-05 05:07:33,468 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:07:33,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:07:33,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:07:33,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:07:33,468 INFO L87 Difference]: Start difference. First operand 421 states and 1350 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:33,963 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 64 [2021-06-05 05:07:34,345 WARN L205 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 93 [2021-06-05 05:07:34,693 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2021-06-05 05:07:35,076 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2021-06-05 05:07:35,516 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2021-06-05 05:07:35,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:07:35,555 INFO L93 Difference]: Finished difference Result 673 states and 2049 transitions. [2021-06-05 05:07:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:07:35,556 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:07:35,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:07:35,557 INFO L225 Difference]: With dead ends: 673 [2021-06-05 05:07:35,557 INFO L226 Difference]: Without dead ends: 658 [2021-06-05 05:07:35,557 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2662.3ms TimeCoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:07:35,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-06-05 05:07:35,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 419. [2021-06-05 05:07:35,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 3.2177033492822966) internal successors, (1345), 418 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:35,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1345 transitions. [2021-06-05 05:07:35,562 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1345 transitions. Word has length 20 [2021-06-05 05:07:35,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:07:35,562 INFO L482 AbstractCegarLoop]: Abstraction has 419 states and 1345 transitions. [2021-06-05 05:07:35,562 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:35,562 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1345 transitions. [2021-06-05 05:07:35,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:07:35,563 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:07:35,563 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:07:35,763 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10008,98 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:07:35,763 INFO L430 AbstractCegarLoop]: === Iteration 220 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:07:35,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:07:35,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1645547448, now seen corresponding path program 71 times [2021-06-05 05:07:35,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:07:35,764 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452893707] [2021-06-05 05:07:35,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:07:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:07:35,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:35,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:07:35,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452893707] [2021-06-05 05:07:35,935 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452893707] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:35,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908703981] [2021-06-05 05:07:35,935 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:07:35,968 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:07:35,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:07:35,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:07:35,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:07:36,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:36,186 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:07:36,192 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:36,199 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:36,212 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:36,219 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:36,227 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:07:36,233 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:07:36,240 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,245 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:36,246 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:36,252 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,256 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:07:36,258 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,262 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:36,263 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:36,269 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:07:36,274 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:36,280 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:36,285 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:36,290 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:36,296 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:07:36,302 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:36,307 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:36,313 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:36,318 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:36,323 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:36,329 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:36,334 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 05:07:36,340 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:07:36,345 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:07:36,351 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:36,356 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:36,362 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:36,367 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 2 xjuncts. [2021-06-05 05:07:36,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:36,373 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,377 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:07:36,378 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:36,383 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,387 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2021-06-05 05:07:36,388 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,392 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:07:36,393 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:36,568 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 36 [2021-06-05 05:07:36,568 INFO L628 ElimStorePlain]: treesize reduction 552, result has 23.2 percent of original size [2021-06-05 05:07:36,570 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 7 xjuncts. [2021-06-05 05:07:36,570 INFO L247 ElimStorePlain]: Needed 37 recursive calls to eliminate 1 variables, input treesize:1681, output treesize:167 [2021-06-05 05:07:36,862 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 42 [2021-06-05 05:07:37,014 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 36 [2021-06-05 05:07:37,308 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-06-05 05:07:37,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:37,376 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908703981] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:37,376 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:07:37,376 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 05:07:37,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078530879] [2021-06-05 05:07:37,376 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:07:37,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:07:37,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:07:37,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:07:37,376 INFO L87 Difference]: Start difference. First operand 419 states and 1345 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:37,884 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2021-06-05 05:07:38,102 WARN L205 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2021-06-05 05:07:38,446 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2021-06-05 05:07:38,711 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 64 [2021-06-05 05:07:39,074 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 70 [2021-06-05 05:07:39,262 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2021-06-05 05:07:39,541 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 62 [2021-06-05 05:07:39,763 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2021-06-05 05:07:40,100 WARN L205 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2021-06-05 05:07:40,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:07:40,140 INFO L93 Difference]: Finished difference Result 681 states and 2053 transitions. [2021-06-05 05:07:40,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 05:07:40,140 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:07:40,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:07:40,141 INFO L225 Difference]: With dead ends: 681 [2021-06-05 05:07:40,141 INFO L226 Difference]: Without dead ends: 651 [2021-06-05 05:07:40,141 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 3226.8ms TimeCoverageRelationStatistics Valid=149, Invalid=843, Unknown=0, NotChecked=0, Total=992 [2021-06-05 05:07:40,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-06-05 05:07:40,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 422. [2021-06-05 05:07:40,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 3.2209026128266034) internal successors, (1356), 421 states have internal predecessors, (1356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:40,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 1356 transitions. [2021-06-05 05:07:40,146 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 1356 transitions. Word has length 20 [2021-06-05 05:07:40,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:07:40,147 INFO L482 AbstractCegarLoop]: Abstraction has 422 states and 1356 transitions. [2021-06-05 05:07:40,147 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:40,147 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 1356 transitions. [2021-06-05 05:07:40,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:07:40,147 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:07:40,147 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:07:40,347 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10181,99 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:07:40,348 INFO L430 AbstractCegarLoop]: === Iteration 221 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:07:40,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:07:40,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1329436092, now seen corresponding path program 72 times [2021-06-05 05:07:40,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:07:40,348 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674984410] [2021-06-05 05:07:40,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:07:40,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:07:40,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:40,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:07:40,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674984410] [2021-06-05 05:07:40,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674984410] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:40,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834622535] [2021-06-05 05:07:40,491 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:07:40,516 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:07:40,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:07:40,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:07:40,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:07:41,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,022 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:41,023 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:41,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,029 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:41,030 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:41,036 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,037 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:41,038 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:41,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:41,045 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:41,051 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:41,053 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:41,058 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:41,059 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:41,410 WARN L205 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2021-06-05 05:07:41,411 INFO L628 ElimStorePlain]: treesize reduction 479, result has 42.1 percent of original size [2021-06-05 05:07:41,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,416 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:41,418 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:41,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:41,424 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:41,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:41,430 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:41,682 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2021-06-05 05:07:41,683 INFO L628 ElimStorePlain]: treesize reduction 33, result has 89.2 percent of original size [2021-06-05 05:07:41,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,687 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:41,689 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:41,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,693 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:41,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:41,694 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:41,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:41,699 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:41,818 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-05 05:07:41,818 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:41,824 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2021-06-05 05:07:41,824 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:949, output treesize:242 [2021-06-05 05:07:42,046 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2021-06-05 05:07:42,349 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2021-06-05 05:07:42,547 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1428, v_prenex_1439, v_prenex_1418, v_prenex_1420, v_prenex_1430, array_6, v_prenex_1422, v_prenex_1432, v_prenex_1424, v_prenex_1426], 1=[v_prenex_1417, v_prenex_1427, v_prenex_1419, v_prenex_1429, array_3, v_prenex_1431, v_prenex_1433, v_prenex_1421, v_prenex_1423, v_prenex_1425]} [2021-06-05 05:07:42,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:42,559 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:42,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:42,570 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:42,579 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:42,581 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:42,964 WARN L205 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 87 [2021-06-05 05:07:42,964 INFO L628 ElimStorePlain]: treesize reduction 843, result has 25.6 percent of original size [2021-06-05 05:07:42,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:42,970 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:43,085 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2021-06-05 05:07:43,085 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:43,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:43,091 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:43,203 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 05:07:43,203 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:43,203 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1420 vanished before elimination [2021-06-05 05:07:43,203 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1430 vanished before elimination [2021-06-05 05:07:43,203 INFO L518 ElimStorePlain]: Eliminatee array_6 vanished before elimination [2021-06-05 05:07:43,204 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1422 vanished before elimination [2021-06-05 05:07:43,204 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1432 vanished before elimination [2021-06-05 05:07:43,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:43,209 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:43,316 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2021-06-05 05:07:43,317 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:43,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:43,321 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:43,426 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 05:07:43,427 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:43,427 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1417 vanished before elimination [2021-06-05 05:07:43,427 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1427 vanished before elimination [2021-06-05 05:07:43,427 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1419 vanished before elimination [2021-06-05 05:07:43,427 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1429 vanished before elimination [2021-06-05 05:07:43,427 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:07:43,427 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1431 vanished before elimination [2021-06-05 05:07:43,427 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1433 vanished before elimination [2021-06-05 05:07:43,427 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1421 vanished before elimination [2021-06-05 05:07:43,427 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1423 vanished before elimination [2021-06-05 05:07:43,427 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1425 vanished before elimination [2021-06-05 05:07:43,430 INFO L550 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 20 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:07:43,430 INFO L247 ElimStorePlain]: Needed 8 recursive calls to eliminate 30 variables, input treesize:1214, output treesize:216 [2021-06-05 05:07:43,597 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-06-05 05:07:43,763 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-06-05 05:07:43,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:43,845 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834622535] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:43,845 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:07:43,845 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:07:43,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53385812] [2021-06-05 05:07:43,845 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:07:43,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:07:43,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:07:43,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:07:43,846 INFO L87 Difference]: Start difference. First operand 422 states and 1356 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:44,572 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 93 [2021-06-05 05:07:44,912 WARN L205 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2021-06-05 05:07:45,516 WARN L205 SmtUtils]: Spent 530.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 113 [2021-06-05 05:07:46,023 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 130 [2021-06-05 05:07:46,305 WARN L205 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2021-06-05 05:07:46,532 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 05:07:46,810 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2021-06-05 05:07:47,107 WARN L205 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2021-06-05 05:07:47,482 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2021-06-05 05:07:47,791 WARN L205 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2021-06-05 05:07:47,936 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 66 [2021-06-05 05:07:48,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:07:48,050 INFO L93 Difference]: Finished difference Result 784 states and 2285 transitions. [2021-06-05 05:07:48,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 05:07:48,051 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:07:48,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:07:48,052 INFO L225 Difference]: With dead ends: 784 [2021-06-05 05:07:48,052 INFO L226 Difference]: Without dead ends: 712 [2021-06-05 05:07:48,052 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 4725.9ms TimeCoverageRelationStatistics Valid=178, Invalid=944, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 05:07:48,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-06-05 05:07:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 419. [2021-06-05 05:07:48,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 3.2177033492822966) internal successors, (1345), 418 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:48,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1345 transitions. [2021-06-05 05:07:48,057 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1345 transitions. Word has length 20 [2021-06-05 05:07:48,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:07:48,057 INFO L482 AbstractCegarLoop]: Abstraction has 419 states and 1345 transitions. [2021-06-05 05:07:48,057 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:48,058 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1345 transitions. [2021-06-05 05:07:48,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:07:48,058 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:07:48,058 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:07:48,258 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10247 [2021-06-05 05:07:48,259 INFO L430 AbstractCegarLoop]: === Iteration 222 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:07:48,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:07:48,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1554042634, now seen corresponding path program 73 times [2021-06-05 05:07:48,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:07:48,259 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745224667] [2021-06-05 05:07:48,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:07:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:07:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:48,445 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:07:48,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745224667] [2021-06-05 05:07:48,445 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745224667] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:48,445 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077302244] [2021-06-05 05:07:48,445 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:07:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:07:48,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:07:48,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:07:49,056 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:49,058 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:49,063 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,064 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:49,065 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:49,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:49,071 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:49,076 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:49,078 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:49,083 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,084 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,084 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:49,085 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:49,090 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:49,091 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:49,436 WARN L205 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2021-06-05 05:07:49,436 INFO L628 ElimStorePlain]: treesize reduction 431, result has 45.6 percent of original size [2021-06-05 05:07:49,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:49,442 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:49,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,446 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:49,448 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:49,452 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,452 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:49,453 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:49,704 WARN L205 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2021-06-05 05:07:49,704 INFO L628 ElimStorePlain]: treesize reduction 30, result has 90.6 percent of original size [2021-06-05 05:07:49,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,709 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:49,710 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:49,714 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,715 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:49,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:49,716 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:49,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:49,720 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:49,921 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2021-06-05 05:07:49,921 INFO L628 ElimStorePlain]: treesize reduction 37, result has 85.8 percent of original size [2021-06-05 05:07:49,926 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 4 dim-0 vars, and 7 xjuncts. [2021-06-05 05:07:49,926 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:895, output treesize:199 [2021-06-05 05:07:50,122 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 70 [2021-06-05 05:07:50,321 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1450, array_6, v_prenex_1452, v_prenex_1448], 1=[v_prenex_1449, array_3, v_prenex_1451, v_prenex_1447]} [2021-06-05 05:07:50,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:07:50,329 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:50,335 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:07:50,335 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:50,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:50,342 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:50,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:50,349 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:50,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:50,355 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:50,361 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:07:50,362 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:50,709 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 76 [2021-06-05 05:07:50,709 INFO L628 ElimStorePlain]: treesize reduction 959, result has 22.3 percent of original size [2021-06-05 05:07:50,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:50,715 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:50,830 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 05:07:50,830 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:50,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:50,839 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:50,965 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 05:07:50,965 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:50,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:50,970 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:50,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:50,974 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:51,175 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2021-06-05 05:07:51,175 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.6 percent of original size [2021-06-05 05:07:51,176 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1449 vanished before elimination [2021-06-05 05:07:51,176 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:07:51,176 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1451 vanished before elimination [2021-06-05 05:07:51,176 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1447 vanished before elimination [2021-06-05 05:07:51,179 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 8 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:07:51,179 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:1372, output treesize:190 [2021-06-05 05:07:51,321 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2021-06-05 05:07:51,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:51,617 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077302244] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:51,617 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:07:51,617 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:07:51,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629019684] [2021-06-05 05:07:51,618 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:07:51,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:07:51,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:07:51,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:07:51,618 INFO L87 Difference]: Start difference. First operand 419 states and 1345 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:52,313 WARN L205 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 91 [2021-06-05 05:07:52,623 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 93 [2021-06-05 05:07:52,923 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-06-05 05:07:53,125 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2021-06-05 05:07:53,437 WARN L205 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2021-06-05 05:07:53,798 WARN L205 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2021-06-05 05:07:54,258 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 05:07:54,674 WARN L205 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2021-06-05 05:07:54,833 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-06-05 05:07:55,236 WARN L205 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2021-06-05 05:07:55,674 WARN L205 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2021-06-05 05:07:56,116 WARN L205 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 93 [2021-06-05 05:07:56,282 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-06-05 05:07:56,703 WARN L205 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2021-06-05 05:07:56,997 WARN L205 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2021-06-05 05:07:57,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:07:57,028 INFO L93 Difference]: Finished difference Result 974 states and 2790 transitions. [2021-06-05 05:07:57,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-05 05:07:57,028 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:07:57,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:07:57,029 INFO L225 Difference]: With dead ends: 974 [2021-06-05 05:07:57,029 INFO L226 Difference]: Without dead ends: 902 [2021-06-05 05:07:57,029 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 5636.8ms TimeCoverageRelationStatistics Valid=244, Invalid=1162, Unknown=0, NotChecked=0, Total=1406 [2021-06-05 05:07:57,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2021-06-05 05:07:57,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 422. [2021-06-05 05:07:57,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 422 states, 421 states have (on average 3.2327790973871733) internal successors, (1361), 421 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:57,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 1361 transitions. [2021-06-05 05:07:57,036 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 1361 transitions. Word has length 20 [2021-06-05 05:07:57,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:07:57,036 INFO L482 AbstractCegarLoop]: Abstraction has 422 states and 1361 transitions. [2021-06-05 05:07:57,036 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:07:57,036 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 1361 transitions. [2021-06-05 05:07:57,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:07:57,037 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:07:57,037 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:07:57,237 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10365 [2021-06-05 05:07:57,237 INFO L430 AbstractCegarLoop]: === Iteration 223 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:07:57,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:07:57,237 INFO L82 PathProgramCache]: Analyzing trace with hash -564982086, now seen corresponding path program 74 times [2021-06-05 05:07:57,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:07:57,238 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270242764] [2021-06-05 05:07:57,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:07:57,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:07:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:07:57,431 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:07:57,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270242764] [2021-06-05 05:07:57,431 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270242764] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:07:57,431 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314441828] [2021-06-05 05:07:57,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:07:57,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:07:57,458 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:07:57,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:07:57,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:07:57,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:57,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:57,977 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:58,316 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 98 [2021-06-05 05:07:58,316 INFO L628 ElimStorePlain]: treesize reduction 203, result has 64.1 percent of original size [2021-06-05 05:07:58,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:58,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:58,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:58,323 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:58,328 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:58,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:58,330 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:58,590 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2021-06-05 05:07:58,590 INFO L628 ElimStorePlain]: treesize reduction 26, result has 92.2 percent of original size [2021-06-05 05:07:58,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:58,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:58,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:07:58,597 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:58,601 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:58,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:58,602 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:58,726 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-06-05 05:07:58,727 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:58,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:58,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:07:58,733 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:58,854 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 05:07:58,854 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:58,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:58,859 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:58,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:07:58,860 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:58,864 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:58,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:58,865 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:58,973 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2021-06-05 05:07:58,974 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:58,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:07:58,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:58,979 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:59,086 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 05:07:59,087 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:07:59,093 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:07:59,093 INFO L247 ElimStorePlain]: Needed 10 recursive calls to eliminate 12 variables, input treesize:573, output treesize:232 [2021-06-05 05:07:59,299 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 84 [2021-06-05 05:07:59,495 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1471, v_prenex_1473, v_prenex_1475, array_6, v_prenex_1467, v_prenex_1469], 1=[array_3, v_prenex_1470, v_prenex_1472, v_prenex_1474, v_prenex_1466, v_prenex_1468]} [2021-06-05 05:07:59,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:59,505 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:59,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:59,514 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:59,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:07:59,524 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:59,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:07:59,533 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:59,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:59,543 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:59,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:07:59,552 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:07:59,952 WARN L205 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 86 [2021-06-05 05:07:59,953 INFO L628 ElimStorePlain]: treesize reduction 1250, result has 16.7 percent of original size [2021-06-05 05:07:59,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:07:59,959 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:00,068 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2021-06-05 05:08:00,068 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:00,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:08:00,074 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:00,189 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 05:08:00,189 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:00,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:00,194 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:00,300 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 05:08:00,300 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:00,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-06-05 05:08:00,305 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:00,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:00,310 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:00,486 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2021-06-05 05:08:00,486 INFO L628 ElimStorePlain]: treesize reduction 25, result has 88.2 percent of original size [2021-06-05 05:08:00,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:00,490 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:00,574 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:00,574 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:08:00,574 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1470 vanished before elimination [2021-06-05 05:08:00,574 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1472 vanished before elimination [2021-06-05 05:08:00,574 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1474 vanished before elimination [2021-06-05 05:08:00,575 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1466 vanished before elimination [2021-06-05 05:08:00,575 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1468 vanished before elimination [2021-06-05 05:08:00,576 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:08:00,577 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1643, output treesize:144 [2021-06-05 05:08:00,719 WARN L205 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-06-05 05:08:00,865 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2021-06-05 05:08:01,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:01,114 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314441828] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:01,114 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:08:01,114 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:08:01,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206714677] [2021-06-05 05:08:01,114 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:08:01,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:08:01,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:08:01,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:08:01,115 INFO L87 Difference]: Start difference. First operand 422 states and 1361 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:01,626 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 66 [2021-06-05 05:08:02,040 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 129 [2021-06-05 05:08:02,369 WARN L205 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2021-06-05 05:08:02,827 WARN L205 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 88 [2021-06-05 05:08:03,043 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 64 [2021-06-05 05:08:03,584 WARN L205 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 102 [2021-06-05 05:08:03,939 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2021-06-05 05:08:04,524 WARN L205 SmtUtils]: Spent 534.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 105 [2021-06-05 05:08:04,975 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 83 [2021-06-05 05:08:05,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:08:05,015 INFO L93 Difference]: Finished difference Result 811 states and 2378 transitions. [2021-06-05 05:08:05,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 05:08:05,016 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:08:05,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:08:05,017 INFO L225 Difference]: With dead ends: 811 [2021-06-05 05:08:05,017 INFO L226 Difference]: Without dead ends: 754 [2021-06-05 05:08:05,017 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 4380.1ms TimeCoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2021-06-05 05:08:05,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2021-06-05 05:08:05,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 417. [2021-06-05 05:08:05,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 3.2091346153846154) internal successors, (1335), 416 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 1335 transitions. [2021-06-05 05:08:05,022 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 1335 transitions. Word has length 20 [2021-06-05 05:08:05,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:08:05,022 INFO L482 AbstractCegarLoop]: Abstraction has 417 states and 1335 transitions. [2021-06-05 05:08:05,023 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:05,023 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 1335 transitions. [2021-06-05 05:08:05,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:08:05,023 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:08:05,023 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:08:05,224 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10562 [2021-06-05 05:08:05,225 INFO L430 AbstractCegarLoop]: === Iteration 224 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:08:05,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:08:05,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1152951686, now seen corresponding path program 75 times [2021-06-05 05:08:05,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:08:05,225 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629268167] [2021-06-05 05:08:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:08:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:08:05,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:05,367 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:08:05,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629268167] [2021-06-05 05:08:05,368 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629268167] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:05,368 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957964485] [2021-06-05 05:08:05,368 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:08:05,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:08:05,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:08:05,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:08:05,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:08:06,020 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:06,022 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:06,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,028 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:06,029 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:06,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:06,035 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:06,042 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,043 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,043 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:06,044 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:06,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,050 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:06,052 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:06,057 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:08:06,058 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:06,393 WARN L205 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 70 [2021-06-05 05:08:06,394 INFO L628 ElimStorePlain]: treesize reduction 427, result has 47.2 percent of original size [2021-06-05 05:08:06,398 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:06,400 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:06,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,405 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:06,407 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:06,411 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:06,413 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:06,660 WARN L205 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 61 [2021-06-05 05:08:06,660 INFO L628 ElimStorePlain]: treesize reduction 34, result has 90.0 percent of original size [2021-06-05 05:08:06,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,665 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:08:06,666 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:06,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,670 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:06,672 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:06,675 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:06,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:08:06,677 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:06,884 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 57 [2021-06-05 05:08:06,884 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.6 percent of original size [2021-06-05 05:08:06,889 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:08:06,889 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:919, output treesize:242 [2021-06-05 05:08:07,339 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 84 [2021-06-05 05:08:07,596 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1504, array_6, v_prenex_1496, v_prenex_1498, v_prenex_1500, v_prenex_1502], 1=[array_3, v_prenex_1495, v_prenex_1497, v_prenex_1499, v_prenex_1501, v_prenex_1503]} [2021-06-05 05:08:07,606 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:07,607 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:07,615 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:07,616 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:07,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:07,625 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:07,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:08:07,634 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:07,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:07,644 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:07,652 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:08:07,652 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:07,979 WARN L205 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 86 [2021-06-05 05:08:07,980 INFO L628 ElimStorePlain]: treesize reduction 1210, result has 13.8 percent of original size [2021-06-05 05:08:07,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:07,986 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:08,056 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:08,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:08:08,062 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:08,129 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:08,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:08:08,135 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:08,197 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:08,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:08,203 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:08,263 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:08,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:08,268 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:08,327 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:08,327 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:08:08,327 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1495 vanished before elimination [2021-06-05 05:08:08,327 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1497 vanished before elimination [2021-06-05 05:08:08,327 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1499 vanished before elimination [2021-06-05 05:08:08,327 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1501 vanished before elimination [2021-06-05 05:08:08,328 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1503 vanished before elimination [2021-06-05 05:08:08,329 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:08:08,330 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 18 variables, input treesize:1537, output treesize:107 [2021-06-05 05:08:08,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:08,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957964485] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:08,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:08:08,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:08:08,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096507625] [2021-06-05 05:08:08,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:08:08,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:08:08,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:08:08,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:08:08,481 INFO L87 Difference]: Start difference. First operand 417 states and 1335 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:08,982 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2021-06-05 05:08:09,300 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 68 [2021-06-05 05:08:09,651 WARN L205 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 121 [2021-06-05 05:08:10,109 WARN L205 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 123 [2021-06-05 05:08:10,344 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-06-05 05:08:10,564 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2021-06-05 05:08:10,732 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-06-05 05:08:10,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:08:10,751 INFO L93 Difference]: Finished difference Result 614 states and 1865 transitions. [2021-06-05 05:08:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 05:08:10,751 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:08:10,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:08:10,752 INFO L225 Difference]: With dead ends: 614 [2021-06-05 05:08:10,752 INFO L226 Difference]: Without dead ends: 566 [2021-06-05 05:08:10,752 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2658.9ms TimeCoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2021-06-05 05:08:10,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-06-05 05:08:10,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 423. [2021-06-05 05:08:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 3.2014218009478674) internal successors, (1351), 422 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:10,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1351 transitions. [2021-06-05 05:08:10,757 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1351 transitions. Word has length 20 [2021-06-05 05:08:10,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:08:10,757 INFO L482 AbstractCegarLoop]: Abstraction has 423 states and 1351 transitions. [2021-06-05 05:08:10,757 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:10,757 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1351 transitions. [2021-06-05 05:08:10,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:08:10,758 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:08:10,758 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:08:10,958 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10689,103 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:08:10,958 INFO L430 AbstractCegarLoop]: === Iteration 225 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:08:10,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:08:10,958 INFO L82 PathProgramCache]: Analyzing trace with hash 836840330, now seen corresponding path program 76 times [2021-06-05 05:08:10,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:08:10,959 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956104894] [2021-06-05 05:08:10,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:08:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:08:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:11,162 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:08:11,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956104894] [2021-06-05 05:08:11,162 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956104894] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:11,162 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381163414] [2021-06-05 05:08:11,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:08:11,195 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:08:11,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:08:11,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:08:11,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:08:11,634 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 65 [2021-06-05 05:08:12,046 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,047 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:12,048 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:12,054 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:12,058 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:12,065 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,066 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:12,067 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:12,073 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:08:12,074 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:12,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:12,082 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:12,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:08:12,090 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:12,535 WARN L205 SmtUtils]: Spent 445.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 81 [2021-06-05 05:08:12,536 INFO L628 ElimStorePlain]: treesize reduction 577, result has 43.3 percent of original size [2021-06-05 05:08:12,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,543 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:12,543 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:12,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:12,550 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:12,556 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:12,557 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:12,739 WARN L205 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 05:08:12,739 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:12,744 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,745 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:12,746 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:12,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:12,752 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:12,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:12,758 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:12,934 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 05:08:12,934 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:12,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:12,941 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:12,946 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:12,948 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:12,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:12,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:12,954 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:13,276 WARN L205 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2021-06-05 05:08:13,276 INFO L628 ElimStorePlain]: treesize reduction 34, result has 91.0 percent of original size [2021-06-05 05:08:13,283 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-06-05 05:08:13,283 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1201, output treesize:321 [2021-06-05 05:08:13,537 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2021-06-05 05:08:13,731 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1526, v_prenex_1528, v_prenex_1541, v_prenex_1530, array_6, v_prenex_1532, v_prenex_1520, v_prenex_1534, v_prenex_1522, v_prenex_1524], 1=[v_prenex_1527, v_prenex_1529, array_3, v_prenex_1519, v_prenex_1521, v_prenex_1531, v_prenex_1523, v_prenex_1533, v_prenex_1525, v_prenex_1535]} [2021-06-05 05:08:13,741 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:13,742 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:14,168 WARN L205 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 99 [2021-06-05 05:08:14,168 INFO L628 ElimStorePlain]: treesize reduction 850, result has 27.9 percent of original size [2021-06-05 05:08:14,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:08:14,174 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:14,298 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-05 05:08:14,299 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:14,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:14,304 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:14,429 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-05 05:08:14,429 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:14,429 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1530 vanished before elimination [2021-06-05 05:08:14,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:14,435 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:14,557 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 05:08:14,557 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:14,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:08:14,563 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:14,681 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 05:08:14,682 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:14,686 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:14,687 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:14,804 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 05:08:14,805 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:14,805 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1534 vanished before elimination [2021-06-05 05:08:14,805 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1522 vanished before elimination [2021-06-05 05:08:14,805 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1524 vanished before elimination [2021-06-05 05:08:14,805 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1527 vanished before elimination [2021-06-05 05:08:14,805 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1529 vanished before elimination [2021-06-05 05:08:14,805 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:08:14,805 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1519 vanished before elimination [2021-06-05 05:08:14,805 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1521 vanished before elimination [2021-06-05 05:08:14,805 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1531 vanished before elimination [2021-06-05 05:08:14,805 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1523 vanished before elimination [2021-06-05 05:08:14,805 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1533 vanished before elimination [2021-06-05 05:08:14,805 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1525 vanished before elimination [2021-06-05 05:08:14,805 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1535 vanished before elimination [2021-06-05 05:08:14,809 INFO L550 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 20 dim-1 vars, End of recursive call: and 12 xjuncts. [2021-06-05 05:08:14,809 INFO L247 ElimStorePlain]: Needed 7 recursive calls to eliminate 30 variables, input treesize:1186, output treesize:239 [2021-06-05 05:08:14,981 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2021-06-05 05:08:15,139 WARN L205 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-06-05 05:08:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:15,216 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381163414] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:15,216 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:08:15,216 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:08:15,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264119029] [2021-06-05 05:08:15,216 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:08:15,216 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:08:15,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:08:15,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:08:15,217 INFO L87 Difference]: Start difference. First operand 423 states and 1351 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:16,028 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 101 [2021-06-05 05:08:16,468 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 130 [2021-06-05 05:08:16,780 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2021-06-05 05:08:17,154 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 96 [2021-06-05 05:08:17,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:08:17,206 INFO L93 Difference]: Finished difference Result 630 states and 1914 transitions. [2021-06-05 05:08:17,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:08:17,206 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:08:17,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:08:17,207 INFO L225 Difference]: With dead ends: 630 [2021-06-05 05:08:17,207 INFO L226 Difference]: Without dead ends: 615 [2021-06-05 05:08:17,207 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2665.2ms TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:08:17,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-06-05 05:08:17,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 423. [2021-06-05 05:08:17,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 3.2014218009478674) internal successors, (1351), 422 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:17,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1351 transitions. [2021-06-05 05:08:17,212 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1351 transitions. Word has length 20 [2021-06-05 05:08:17,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:08:17,213 INFO L482 AbstractCegarLoop]: Abstraction has 423 states and 1351 transitions. [2021-06-05 05:08:17,213 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:17,213 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1351 transitions. [2021-06-05 05:08:17,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:08:17,213 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:08:17,213 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:08:17,414 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10861 [2021-06-05 05:08:17,414 INFO L430 AbstractCegarLoop]: === Iteration 226 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:08:17,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:08:17,414 INFO L82 PathProgramCache]: Analyzing trace with hash -861880058, now seen corresponding path program 77 times [2021-06-05 05:08:17,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:08:17,414 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831151021] [2021-06-05 05:08:17,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:08:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:08:17,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:17,561 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:08:17,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831151021] [2021-06-05 05:08:17,561 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831151021] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:17,561 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1977926861] [2021-06-05 05:08:17,561 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:08:17,595 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-06-05 05:08:17,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:08:17,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-05 05:08:17,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:08:17,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:17,836 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:17,840 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,844 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:17,844 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:17,849 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:17,853 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:17,858 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:17,862 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:17,866 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,870 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:17,871 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,874 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:08:17,874 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,878 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:17,879 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:08:17,884 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:17,888 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:17,893 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:17,897 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:08:17,902 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:17,907 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 2 xjuncts. [2021-06-05 05:08:17,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:17,912 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:17,916 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,920 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:17,921 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,925 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:17,926 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,930 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:17,930 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:08:17,935 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:17,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:08:17,940 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:18,058 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2021-06-05 05:08:18,058 INFO L628 ElimStorePlain]: treesize reduction 251, result has 36.5 percent of original size [2021-06-05 05:08:18,059 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:08:18,060 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 1 variables, input treesize:847, output treesize:144 [2021-06-05 05:08:18,388 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 37 [2021-06-05 05:08:18,590 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-06-05 05:08:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:18,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1977926861] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:18,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:08:18,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 05:08:18,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281879452] [2021-06-05 05:08:18,668 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:08:18,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:08:18,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:08:18,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:08:18,669 INFO L87 Difference]: Start difference. First operand 423 states and 1351 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:19,187 WARN L205 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 51 [2021-06-05 05:08:19,403 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2021-06-05 05:08:19,658 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2021-06-05 05:08:20,010 WARN L205 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2021-06-05 05:08:20,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:08:20,044 INFO L93 Difference]: Finished difference Result 606 states and 1860 transitions. [2021-06-05 05:08:20,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:08:20,045 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:08:20,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:08:20,045 INFO L225 Difference]: With dead ends: 606 [2021-06-05 05:08:20,045 INFO L226 Difference]: Without dead ends: 584 [2021-06-05 05:08:20,046 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1772.1ms TimeCoverageRelationStatistics Valid=104, Invalid=598, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:08:20,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-06-05 05:08:20,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 420. [2021-06-05 05:08:20,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 3.2052505966587113) internal successors, (1343), 419 states have internal predecessors, (1343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:20,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1343 transitions. [2021-06-05 05:08:20,050 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1343 transitions. Word has length 20 [2021-06-05 05:08:20,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:08:20,050 INFO L482 AbstractCegarLoop]: Abstraction has 420 states and 1343 transitions. [2021-06-05 05:08:20,050 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:20,051 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1343 transitions. [2021-06-05 05:08:20,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:08:20,051 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:08:20,051 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:08:20,251 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11032 [2021-06-05 05:08:20,252 INFO L430 AbstractCegarLoop]: === Iteration 227 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:08:20,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:08:20,252 INFO L82 PathProgramCache]: Analyzing trace with hash 1741930810, now seen corresponding path program 78 times [2021-06-05 05:08:20,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:08:20,252 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814875711] [2021-06-05 05:08:20,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:08:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:08:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:20,395 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:08:20,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814875711] [2021-06-05 05:08:20,395 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814875711] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:20,395 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [531190490] [2021-06-05 05:08:20,395 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:08:20,424 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 05:08:20,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:08:20,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:08:20,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:08:20,854 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 65 [2021-06-05 05:08:21,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:21,006 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:21,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:21,007 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:21,014 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:08:21,014 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:21,021 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:21,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:21,022 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:21,412 WARN L205 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 125 [2021-06-05 05:08:21,413 INFO L628 ElimStorePlain]: treesize reduction 181, result has 71.6 percent of original size [2021-06-05 05:08:21,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:21,419 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:21,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:21,420 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:21,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:21,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:08:21,427 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:21,605 WARN L205 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-06-05 05:08:21,605 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:21,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:21,612 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:21,612 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:08:21,613 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:21,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:21,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:21,620 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:21,789 WARN L205 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2021-06-05 05:08:21,790 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:21,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:21,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:21,797 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:21,970 WARN L205 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2021-06-05 05:08:21,970 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:21,976 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:21,977 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:21,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:08:21,978 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:21,983 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:21,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:08:21,993 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:22,156 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 05:08:22,156 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:22,162 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:22,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:22,164 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:22,316 WARN L205 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2021-06-05 05:08:22,316 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:22,322 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:22,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:22,323 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:22,473 WARN L205 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2021-06-05 05:08:22,474 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:22,480 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:22,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:22,481 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:22,631 WARN L205 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2021-06-05 05:08:22,631 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:22,639 INFO L550 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-1 vars, End of recursive call: 9 dim-0 vars, and 11 xjuncts. [2021-06-05 05:08:22,640 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 16 variables, input treesize:753, output treesize:344 [2021-06-05 05:08:22,868 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 102 [2021-06-05 05:08:23,349 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1571, v_prenex_1573, array_6, v_prenex_1565, v_prenex_1575, v_prenex_1567, v_prenex_1569], 1=[array_0, v_prenex_1570, v_prenex_1572, v_prenex_1574, v_prenex_1564, v_prenex_1566, v_prenex_1568]} [2021-06-05 05:08:23,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:23,360 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:23,370 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:08:23,370 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:23,380 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:23,381 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:23,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:23,392 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:23,401 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:08:23,402 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:23,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:08:23,412 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:23,917 WARN L205 SmtUtils]: Spent 504.00 ms on a formula simplification. DAG size of input: 174 DAG size of output: 110 [2021-06-05 05:08:23,918 INFO L628 ElimStorePlain]: treesize reduction 1589, result has 16.8 percent of original size [2021-06-05 05:08:23,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:08:23,925 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:24,056 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 05:08:24,056 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:24,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:08:24,063 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:24,190 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 05:08:24,190 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:24,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:24,197 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:24,328 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-05 05:08:24,329 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:24,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:08:24,335 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:24,454 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-05 05:08:24,455 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:24,460 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-06-05 05:08:24,460 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:24,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:24,466 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:24,669 WARN L205 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2021-06-05 05:08:24,670 INFO L628 ElimStorePlain]: treesize reduction 33, result has 87.3 percent of original size [2021-06-05 05:08:24,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:24,676 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:24,774 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:24,774 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:08:24,774 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1570 vanished before elimination [2021-06-05 05:08:24,775 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1572 vanished before elimination [2021-06-05 05:08:24,775 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1574 vanished before elimination [2021-06-05 05:08:24,775 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1564 vanished before elimination [2021-06-05 05:08:24,775 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1566 vanished before elimination [2021-06-05 05:08:24,775 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1568 vanished before elimination [2021-06-05 05:08:24,777 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 14 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 05:08:24,778 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 21 variables, input treesize:2091, output treesize:175 [2021-06-05 05:08:24,942 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-06-05 05:08:25,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:25,116 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [531190490] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:25,116 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:08:25,116 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:08:25,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440278562] [2021-06-05 05:08:25,117 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:08:25,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:08:25,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:08:25,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:08:25,117 INFO L87 Difference]: Start difference. First operand 420 states and 1343 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:25,616 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2021-06-05 05:08:26,021 WARN L205 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2021-06-05 05:08:26,402 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 159 [2021-06-05 05:08:26,667 WARN L205 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2021-06-05 05:08:27,091 WARN L205 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2021-06-05 05:08:27,321 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 05:08:27,605 WARN L205 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2021-06-05 05:08:28,035 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 88 [2021-06-05 05:08:28,410 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2021-06-05 05:08:28,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:08:28,474 INFO L93 Difference]: Finished difference Result 722 states and 2138 transitions. [2021-06-05 05:08:28,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:08:28,475 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:08:28,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:08:28,476 INFO L225 Difference]: With dead ends: 722 [2021-06-05 05:08:28,476 INFO L226 Difference]: Without dead ends: 650 [2021-06-05 05:08:28,476 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 3814.8ms TimeCoverageRelationStatistics Valid=181, Invalid=875, Unknown=0, NotChecked=0, Total=1056 [2021-06-05 05:08:28,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2021-06-05 05:08:28,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 417. [2021-06-05 05:08:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 416 states have (on average 3.2091346153846154) internal successors, (1335), 416 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:28,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 1335 transitions. [2021-06-05 05:08:28,481 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 1335 transitions. Word has length 20 [2021-06-05 05:08:28,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:08:28,481 INFO L482 AbstractCegarLoop]: Abstraction has 417 states and 1335 transitions. [2021-06-05 05:08:28,481 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:28,481 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 1335 transitions. [2021-06-05 05:08:28,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:08:28,482 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:08:28,482 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:08:28,682 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11095,106 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:08:28,682 INFO L430 AbstractCegarLoop]: === Iteration 228 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:08:28,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:08:28,683 INFO L82 PathProgramCache]: Analyzing trace with hash 558385996, now seen corresponding path program 79 times [2021-06-05 05:08:28,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:08:28,683 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601079660] [2021-06-05 05:08:28,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:08:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:08:28,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:28,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:08:28,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601079660] [2021-06-05 05:08:28,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601079660] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:28,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883261693] [2021-06-05 05:08:28,831 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:08:28,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:08:28,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:08:28,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:08:29,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,351 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:29,352 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:29,357 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:29,359 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:29,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:29,366 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:29,371 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:29,373 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:29,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,378 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:29,379 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:29,384 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:08:29,385 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:29,716 WARN L205 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2021-06-05 05:08:29,716 INFO L628 ElimStorePlain]: treesize reduction 472, result has 43.7 percent of original size [2021-06-05 05:08:29,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,721 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:08:29,723 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:29,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,727 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:29,728 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:29,732 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:29,733 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:29,991 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2021-06-05 05:08:29,992 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.7 percent of original size [2021-06-05 05:08:29,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,996 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:29,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:29,997 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:30,001 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:08:30,001 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:30,005 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:30,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:30,006 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:30,113 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 58 [2021-06-05 05:08:30,113 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:30,119 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:08:30,119 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:949, output treesize:241 [2021-06-05 05:08:30,500 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1590, v_prenex_1592, v_prenex_1594, array_6, v_prenex_1586, v_prenex_1588], 1=[array_0, v_prenex_1591, v_prenex_1593, v_prenex_1585, v_prenex_1587, v_prenex_1589]} [2021-06-05 05:08:30,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:30,509 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:30,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:08:30,518 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:30,525 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:30,527 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 2 xjuncts. [2021-06-05 05:08:30,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:30,535 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:30,542 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:30,543 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:30,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:08:30,551 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:30,927 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 90 [2021-06-05 05:08:30,927 INFO L628 ElimStorePlain]: treesize reduction 1350, result has 14.7 percent of original size [2021-06-05 05:08:30,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:30,933 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:31,034 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-06-05 05:08:31,034 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:31,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:08:31,040 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:31,132 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:31,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:08:31,138 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:31,226 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:31,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:31,231 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:31,318 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:31,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:31,323 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:31,407 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:31,407 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:08:31,407 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1591 vanished before elimination [2021-06-05 05:08:31,407 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1593 vanished before elimination [2021-06-05 05:08:31,408 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1585 vanished before elimination [2021-06-05 05:08:31,408 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1587 vanished before elimination [2021-06-05 05:08:31,408 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1589 vanished before elimination [2021-06-05 05:08:31,410 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:08:31,410 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 18 variables, input treesize:1703, output treesize:140 [2021-06-05 05:08:31,548 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-06-05 05:08:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:31,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883261693] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:31,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:08:31,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:08:31,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621446457] [2021-06-05 05:08:31,854 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:08:31,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:08:31,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:08:31,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:08:31,854 INFO L87 Difference]: Start difference. First operand 417 states and 1335 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:32,680 WARN L205 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 129 [2021-06-05 05:08:32,921 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2021-06-05 05:08:33,215 WARN L205 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 72 [2021-06-05 05:08:33,416 WARN L205 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2021-06-05 05:08:33,825 WARN L205 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2021-06-05 05:08:34,291 WARN L205 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2021-06-05 05:08:34,640 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 68 [2021-06-05 05:08:35,080 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2021-06-05 05:08:35,585 WARN L205 SmtUtils]: Spent 456.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2021-06-05 05:08:35,960 WARN L205 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2021-06-05 05:08:35,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:08:35,999 INFO L93 Difference]: Finished difference Result 814 states and 2403 transitions. [2021-06-05 05:08:35,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-06-05 05:08:35,999 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:08:36,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:08:36,000 INFO L225 Difference]: With dead ends: 814 [2021-06-05 05:08:36,001 INFO L226 Difference]: Without dead ends: 784 [2021-06-05 05:08:36,001 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4419.1ms TimeCoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2021-06-05 05:08:36,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2021-06-05 05:08:36,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 418. [2021-06-05 05:08:36,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 3.2134292565947242) internal successors, (1340), 417 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1340 transitions. [2021-06-05 05:08:36,008 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1340 transitions. Word has length 20 [2021-06-05 05:08:36,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:08:36,008 INFO L482 AbstractCegarLoop]: Abstraction has 418 states and 1340 transitions. [2021-06-05 05:08:36,008 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:36,008 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1340 transitions. [2021-06-05 05:08:36,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:08:36,009 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:08:36,009 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:08:36,212 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11213,107 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:08:36,213 INFO L430 AbstractCegarLoop]: === Iteration 229 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:08:36,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:08:36,213 INFO L82 PathProgramCache]: Analyzing trace with hash -660249364, now seen corresponding path program 80 times [2021-06-05 05:08:36,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:08:36,213 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724315983] [2021-06-05 05:08:36,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:08:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:08:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:36,371 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:08:36,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724315983] [2021-06-05 05:08:36,371 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724315983] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:36,371 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905663702] [2021-06-05 05:08:36,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:08:36,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:08:36,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:08:36,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:08:36,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:08:36,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:36,910 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:36,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:36,911 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:36,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:36,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:36,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:36,918 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:36,922 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:36,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:36,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:36,924 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:36,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:36,928 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:36,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:08:36,929 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:36,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:36,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:36,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:36,935 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:36,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:36,940 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:36,940 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:37,278 WARN L205 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2021-06-05 05:08:37,279 INFO L628 ElimStorePlain]: treesize reduction 465, result has 44.6 percent of original size [2021-06-05 05:08:37,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:37,284 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:37,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:37,285 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:37,290 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:08:37,290 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:37,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:37,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:37,295 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:37,415 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 60 [2021-06-05 05:08:37,415 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:37,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:37,420 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:37,420 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:37,421 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:37,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:37,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:37,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:37,427 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:37,431 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:37,431 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:08:37,432 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:37,644 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 56 [2021-06-05 05:08:37,644 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.6 percent of original size [2021-06-05 05:08:37,650 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:08:37,650 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:949, output treesize:233 [2021-06-05 05:08:37,965 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1605, v_prenex_1607, v_prenex_1609, array_6, v_prenex_1611, v_prenex_1613], 1=[v_prenex_1604, v_prenex_1606, array_0, v_prenex_1608, v_prenex_1610, v_prenex_1612]} [2021-06-05 05:08:37,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:37,975 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:37,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:37,983 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:37,991 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:37,992 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:38,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:08:38,001 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:38,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:38,010 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:38,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:38,018 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:38,417 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 93 [2021-06-05 05:08:38,417 INFO L628 ElimStorePlain]: treesize reduction 1269, result has 17.4 percent of original size [2021-06-05 05:08:38,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:38,423 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:38,535 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-05 05:08:38,536 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:38,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:38,542 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:38,650 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2021-06-05 05:08:38,650 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:38,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:08:38,656 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:38,767 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 05:08:38,768 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:38,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:38,773 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:38,875 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2021-06-05 05:08:38,876 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:38,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-06-05 05:08:38,881 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:38,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:38,885 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:39,061 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2021-06-05 05:08:39,062 INFO L628 ElimStorePlain]: treesize reduction 27, result has 87.4 percent of original size [2021-06-05 05:08:39,062 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1604 vanished before elimination [2021-06-05 05:08:39,062 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1606 vanished before elimination [2021-06-05 05:08:39,062 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:08:39,062 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1608 vanished before elimination [2021-06-05 05:08:39,062 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1610 vanished before elimination [2021-06-05 05:08:39,062 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1612 vanished before elimination [2021-06-05 05:08:39,064 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:08:39,064 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1655, output treesize:140 [2021-06-05 05:08:39,205 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 32 [2021-06-05 05:08:39,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:39,492 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905663702] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:39,492 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:08:39,492 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:08:39,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597405716] [2021-06-05 05:08:39,492 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:08:39,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:08:39,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:08:39,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:08:39,492 INFO L87 Difference]: Start difference. First operand 418 states and 1340 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:39,961 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2021-06-05 05:08:40,364 WARN L205 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 121 [2021-06-05 05:08:40,607 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2021-06-05 05:08:41,095 WARN L205 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2021-06-05 05:08:41,575 WARN L205 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2021-06-05 05:08:41,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:08:41,609 INFO L93 Difference]: Finished difference Result 712 states and 2138 transitions. [2021-06-05 05:08:41,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:08:41,610 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:08:41,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:08:41,611 INFO L225 Difference]: With dead ends: 712 [2021-06-05 05:08:41,611 INFO L226 Difference]: Without dead ends: 697 [2021-06-05 05:08:41,611 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2450.0ms TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:08:41,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2021-06-05 05:08:41,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 419. [2021-06-05 05:08:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 3.2200956937799043) internal successors, (1346), 418 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:41,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 1346 transitions. [2021-06-05 05:08:41,616 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 1346 transitions. Word has length 20 [2021-06-05 05:08:41,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:08:41,616 INFO L482 AbstractCegarLoop]: Abstraction has 419 states and 1346 transitions. [2021-06-05 05:08:41,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 1346 transitions. [2021-06-05 05:08:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:08:41,617 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:08:41,617 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:08:41,817 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11373,108 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:08:41,818 INFO L430 AbstractCegarLoop]: === Iteration 230 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:08:41,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:08:41,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1547446544, now seen corresponding path program 81 times [2021-06-05 05:08:41,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:08:41,818 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030648864] [2021-06-05 05:08:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:08:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:08:41,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:41,990 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:08:41,990 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030648864] [2021-06-05 05:08:41,991 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030648864] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:41,991 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918184595] [2021-06-05 05:08:41,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:08:42,019 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:08:42,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:08:42,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:08:42,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:08:42,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:42,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:42,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:08:42,570 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:42,576 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:42,577 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:42,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:08:42,578 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:42,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:42,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:08:42,585 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:42,932 WARN L205 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 108 [2021-06-05 05:08:42,933 INFO L628 ElimStorePlain]: treesize reduction 140, result has 73.0 percent of original size [2021-06-05 05:08:42,938 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:42,939 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:42,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:08:42,940 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:42,945 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:42,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:42,946 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:43,112 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2021-06-05 05:08:43,112 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:43,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:43,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:43,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:43,119 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:43,124 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:08:43,124 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:43,253 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 05:08:43,253 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:43,258 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:43,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:43,259 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:43,386 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2021-06-05 05:08:43,386 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:43,390 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:43,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:43,391 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:43,519 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-05 05:08:43,519 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:43,524 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:43,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:43,525 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:43,651 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2021-06-05 05:08:43,651 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:43,658 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 6 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:08:43,658 INFO L247 ElimStorePlain]: Needed 11 recursive calls to eliminate 12 variables, input treesize:633, output treesize:276 [2021-06-05 05:08:43,885 WARN L205 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2021-06-05 05:08:44,085 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1636, v_prenex_1628, array_6, v_prenex_1630, v_prenex_1632, v_prenex_1634], 1=[array_0, v_prenex_1627, v_prenex_1629, v_prenex_1631, v_prenex_1633, v_prenex_1635]} [2021-06-05 05:08:44,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:08:44,095 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:44,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:44,104 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:44,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:44,113 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:44,121 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:08:44,122 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:44,130 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:44,131 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 2 xjuncts. [2021-06-05 05:08:44,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:44,141 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:44,579 WARN L205 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 99 [2021-06-05 05:08:44,580 INFO L628 ElimStorePlain]: treesize reduction 1405, result has 15.5 percent of original size [2021-06-05 05:08:44,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:08:44,586 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:44,697 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2021-06-05 05:08:44,697 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:44,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:44,704 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:44,812 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2021-06-05 05:08:44,812 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:44,817 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:08:44,818 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:44,922 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 05:08:44,922 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:44,927 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:44,928 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:45,035 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 05:08:45,035 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:45,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:45,041 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:45,141 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2021-06-05 05:08:45,142 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:45,142 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:08:45,142 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1627 vanished before elimination [2021-06-05 05:08:45,142 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1629 vanished before elimination [2021-06-05 05:08:45,142 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1631 vanished before elimination [2021-06-05 05:08:45,142 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1633 vanished before elimination [2021-06-05 05:08:45,142 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1635 vanished before elimination [2021-06-05 05:08:45,145 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:08:45,145 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 18 variables, input treesize:1817, output treesize:194 [2021-06-05 05:08:45,316 WARN L205 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-06-05 05:08:45,545 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 36 [2021-06-05 05:08:45,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:45,730 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918184595] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:45,730 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:08:45,730 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:08:45,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596807964] [2021-06-05 05:08:45,730 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:08:45,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:08:45,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:08:45,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:08:45,730 INFO L87 Difference]: Start difference. First operand 419 states and 1346 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:46,207 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2021-06-05 05:08:46,762 WARN L205 SmtUtils]: Spent 449.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 141 [2021-06-05 05:08:47,043 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2021-06-05 05:08:47,260 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2021-06-05 05:08:47,479 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 61 [2021-06-05 05:08:47,873 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2021-06-05 05:08:48,282 WARN L205 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 74 [2021-06-05 05:08:48,719 WARN L205 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 83 [2021-06-05 05:08:49,163 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2021-06-05 05:08:49,615 WARN L205 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2021-06-05 05:08:50,086 WARN L205 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2021-06-05 05:08:50,232 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2021-06-05 05:08:50,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:08:50,293 INFO L93 Difference]: Finished difference Result 978 states and 2800 transitions. [2021-06-05 05:08:50,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-05 05:08:50,293 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:08:50,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:08:50,295 INFO L225 Difference]: With dead ends: 978 [2021-06-05 05:08:50,295 INFO L226 Difference]: Without dead ends: 906 [2021-06-05 05:08:50,295 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 5080.9ms TimeCoverageRelationStatistics Valid=217, Invalid=973, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:08:50,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2021-06-05 05:08:50,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 423. [2021-06-05 05:08:50,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 422 states have (on average 3.2322274881516586) internal successors, (1364), 422 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:50,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 1364 transitions. [2021-06-05 05:08:50,305 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 1364 transitions. Word has length 20 [2021-06-05 05:08:50,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:08:50,306 INFO L482 AbstractCegarLoop]: Abstraction has 423 states and 1364 transitions. [2021-06-05 05:08:50,306 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:50,306 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 1364 transitions. [2021-06-05 05:08:50,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:08:50,309 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:08:50,309 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:08:50,522 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11530,109 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:08:50,522 INFO L430 AbstractCegarLoop]: === Iteration 231 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:08:50,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:08:50,523 INFO L82 PathProgramCache]: Analyzing trace with hash 360320496, now seen corresponding path program 82 times [2021-06-05 05:08:50,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:08:50,523 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32634531] [2021-06-05 05:08:50,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:08:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:08:50,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:50,696 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:08:50,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32634531] [2021-06-05 05:08:50,696 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32634531] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:50,696 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340191102] [2021-06-05 05:08:50,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:08:50,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:08:50,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:08:50,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:08:50,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:08:51,266 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,267 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:08:51,268 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:51,292 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,293 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:51,294 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:51,301 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,302 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,302 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:51,303 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:51,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,312 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:51,313 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:51,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,320 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:51,321 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:51,326 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,326 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:51,327 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:51,698 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2021-06-05 05:08:51,698 INFO L628 ElimStorePlain]: treesize reduction 410, result has 50.3 percent of original size [2021-06-05 05:08:51,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,703 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:08:51,704 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:51,708 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:08:51,709 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:51,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:51,714 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:51,846 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2021-06-05 05:08:51,846 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:51,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:08:51,852 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:51,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,857 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:08:51,858 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:51,863 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:08:51,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:51,864 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:51,991 WARN L205 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2021-06-05 05:08:51,991 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:51,998 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:08:51,998 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:1003, output treesize:281 [2021-06-05 05:08:52,232 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 98 [2021-06-05 05:08:52,432 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1647, v_prenex_1649, v_prenex_1651, array_6, v_prenex_1653, v_prenex_1655], 1=[v_prenex_1648, array_0, v_prenex_1650, v_prenex_1652, v_prenex_1654, v_prenex_1646]} [2021-06-05 05:08:52,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:52,442 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:52,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:52,450 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:52,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:08:52,459 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:52,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:52,468 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:52,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:52,477 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:52,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:08:52,486 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:52,928 WARN L205 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 96 [2021-06-05 05:08:52,929 INFO L628 ElimStorePlain]: treesize reduction 1454, result has 14.6 percent of original size [2021-06-05 05:08:52,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:08:52,935 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:53,043 WARN L205 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 05:08:53,043 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:53,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:53,049 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:53,155 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-06-05 05:08:53,155 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:53,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:53,161 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:53,266 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2021-06-05 05:08:53,266 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:53,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:53,272 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:53,374 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2021-06-05 05:08:53,374 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:53,378 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:08:53,379 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:53,479 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:08:53,479 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1648 vanished before elimination [2021-06-05 05:08:53,479 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:08:53,479 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1650 vanished before elimination [2021-06-05 05:08:53,479 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1652 vanished before elimination [2021-06-05 05:08:53,479 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1654 vanished before elimination [2021-06-05 05:08:53,479 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1646 vanished before elimination [2021-06-05 05:08:53,482 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:08:53,483 INFO L247 ElimStorePlain]: Needed 12 recursive calls to eliminate 18 variables, input treesize:1853, output treesize:194 [2021-06-05 05:08:53,651 WARN L205 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-06-05 05:08:53,816 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2021-06-05 05:08:54,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:54,048 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340191102] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:54,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:08:54,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:08:54,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233319028] [2021-06-05 05:08:54,049 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:08:54,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:08:54,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:08:54,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:08:54,049 INFO L87 Difference]: Start difference. First operand 423 states and 1364 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:54,904 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 131 [2021-06-05 05:08:55,173 WARN L205 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 72 [2021-06-05 05:08:55,833 WARN L205 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2021-06-05 05:08:56,537 WARN L205 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 90 [2021-06-05 05:08:56,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:08:56,568 INFO L93 Difference]: Finished difference Result 731 states and 2197 transitions. [2021-06-05 05:08:56,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:08:56,568 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:08:56,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:08:56,569 INFO L225 Difference]: With dead ends: 731 [2021-06-05 05:08:56,569 INFO L226 Difference]: Without dead ends: 716 [2021-06-05 05:08:56,569 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 3089.6ms TimeCoverageRelationStatistics Valid=106, Invalid=544, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:08:56,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2021-06-05 05:08:56,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 421. [2021-06-05 05:08:56,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 3.219047619047619) internal successors, (1352), 420 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:56,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1352 transitions. [2021-06-05 05:08:56,582 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1352 transitions. Word has length 20 [2021-06-05 05:08:56,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:08:56,582 INFO L482 AbstractCegarLoop]: Abstraction has 421 states and 1352 transitions. [2021-06-05 05:08:56,582 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:56,582 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1352 transitions. [2021-06-05 05:08:56,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:08:56,583 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:08:56,583 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:08:56,783 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11655 [2021-06-05 05:08:56,783 INFO L430 AbstractCegarLoop]: === Iteration 232 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:08:56,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:08:56,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1393009026, now seen corresponding path program 83 times [2021-06-05 05:08:56,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:08:56,784 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073182192] [2021-06-05 05:08:56,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:08:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:08:56,964 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:56,964 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:08:56,964 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073182192] [2021-06-05 05:08:56,964 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073182192] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:56,965 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451374840] [2021-06-05 05:08:56,965 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:08:56,992 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:08:56,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:08:56,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:08:56,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:08:57,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:08:57,164 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:08:57,169 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:08:57,174 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:08:57,180 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:08:57,185 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:08:57,190 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:08:57,196 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,200 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:08:57,201 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:08:57,206 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:57,211 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:08:57,217 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:08:57,222 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:57,228 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:57,233 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:08:57,239 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 05:08:57,245 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:08:57,250 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:08:57,256 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:57,262 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:08:57,268 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 33 [2021-06-05 05:08:57,274 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:08:57,280 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2021-06-05 05:08:57,286 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:08:57,292 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 05:08:57,298 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:08:57,304 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:57,311 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:08:57,317 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:08:57,323 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:57,329 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:08:57,336 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:08:57,341 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:57,347 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:08:57,353 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:08:57,359 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,363 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:08:57,364 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:08:57,554 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2021-06-05 05:08:57,555 INFO L628 ElimStorePlain]: treesize reduction 447, result has 32.0 percent of original size [2021-06-05 05:08:57,556 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:08:57,557 INFO L247 ElimStorePlain]: Needed 37 recursive calls to eliminate 1 variables, input treesize:1981, output treesize:210 [2021-06-05 05:08:57,921 WARN L205 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 42 [2021-06-05 05:08:58,107 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 36 [2021-06-05 05:08:58,262 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 33 [2021-06-05 05:08:58,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:08:58,344 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451374840] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:08:58,344 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:08:58,344 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 05:08:58,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62949850] [2021-06-05 05:08:58,344 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:08:58,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:08:58,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:08:58,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:08:58,345 INFO L87 Difference]: Start difference. First operand 421 states and 1352 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:08:59,139 WARN L205 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2021-06-05 05:08:59,674 WARN L205 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 91 [2021-06-05 05:09:00,056 WARN L205 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2021-06-05 05:09:00,204 WARN L205 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 60 [2021-06-05 05:09:00,479 WARN L205 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2021-06-05 05:09:00,706 WARN L205 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 63 [2021-06-05 05:09:00,989 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 83 [2021-06-05 05:09:01,407 WARN L205 SmtUtils]: Spent 271.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2021-06-05 05:09:01,773 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2021-06-05 05:09:01,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:09:01,824 INFO L93 Difference]: Finished difference Result 761 states and 2248 transitions. [2021-06-05 05:09:01,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 05:09:01,824 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:09:01,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:09:01,825 INFO L225 Difference]: With dead ends: 761 [2021-06-05 05:09:01,825 INFO L226 Difference]: Without dead ends: 689 [2021-06-05 05:09:01,825 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 3988.2ms TimeCoverageRelationStatistics Valid=197, Invalid=993, Unknown=0, NotChecked=0, Total=1190 [2021-06-05 05:09:01,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2021-06-05 05:09:01,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 421. [2021-06-05 05:09:01,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 420 states have (on average 3.219047619047619) internal successors, (1352), 420 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:01,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1352 transitions. [2021-06-05 05:09:01,831 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1352 transitions. Word has length 20 [2021-06-05 05:09:01,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:09:01,831 INFO L482 AbstractCegarLoop]: Abstraction has 421 states and 1352 transitions. [2021-06-05 05:09:01,831 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:01,831 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1352 transitions. [2021-06-05 05:09:01,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:09:01,832 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:09:01,832 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:09:02,032 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11814,111 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:02,032 INFO L430 AbstractCegarLoop]: === Iteration 233 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:09:02,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:09:02,032 INFO L82 PathProgramCache]: Analyzing trace with hash 1689017916, now seen corresponding path program 84 times [2021-06-05 05:09:02,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:09:02,033 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071361786] [2021-06-05 05:09:02,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:09:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:09:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:02,179 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:09:02,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071361786] [2021-06-05 05:09:02,179 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071361786] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:02,179 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194503513] [2021-06-05 05:09:02,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:02,208 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-06-05 05:09:02,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:09:02,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:09:02,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:09:02,742 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:02,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:02,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:02,744 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:02,749 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:02,750 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:02,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:02,751 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:02,756 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:02,757 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:02,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:02,758 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:02,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:02,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:02,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:02,764 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:02,769 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:02,793 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:02,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:02,794 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:02,800 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:02,801 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:02,801 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:03,172 WARN L205 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2021-06-05 05:09:03,173 INFO L628 ElimStorePlain]: treesize reduction 496, result has 44.3 percent of original size [2021-06-05 05:09:03,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:03,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:03,178 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:09:03,179 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:03,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:03,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:03,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:03,185 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:03,189 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:03,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:03,190 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:03,455 WARN L205 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2021-06-05 05:09:03,456 INFO L628 ElimStorePlain]: treesize reduction 33, result has 90.4 percent of original size [2021-06-05 05:09:03,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:03,460 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:03,461 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:09:03,461 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:03,465 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:03,466 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:03,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:09:03,467 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:03,471 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:03,471 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:09:03,472 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:03,708 WARN L205 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2021-06-05 05:09:03,708 INFO L628 ElimStorePlain]: treesize reduction 1, result has 99.6 percent of original size [2021-06-05 05:09:03,714 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 3 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:09:03,715 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 6 variables, input treesize:1003, output treesize:265 [2021-06-05 05:09:04,125 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 92 [2021-06-05 05:09:04,319 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1669, v_prenex_1671, v_prenex_1673, array_6, v_prenex_1675, v_prenex_1667], 1=[array_0, v_prenex_1670, v_prenex_1672, v_prenex_1674, v_prenex_1666, v_prenex_1668]} [2021-06-05 05:09:04,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-06-05 05:09:04,330 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:04,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:09:04,340 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:04,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:04,350 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:04,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:09:04,360 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:04,370 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:09:04,371 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:04,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2021-06-05 05:09:04,380 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:04,814 WARN L205 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 95 [2021-06-05 05:09:04,815 INFO L628 ElimStorePlain]: treesize reduction 1431, result has 17.1 percent of original size [2021-06-05 05:09:04,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:04,821 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:04,942 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2021-06-05 05:09:04,943 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:04,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:04,948 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:05,068 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2021-06-05 05:09:05,068 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:05,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:05,074 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:05,079 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:05,079 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:05,180 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2021-06-05 05:09:05,180 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:05,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:09:05,186 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:05,280 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:05,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:05,285 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:05,377 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:05,377 INFO L518 ElimStorePlain]: Eliminatee array_0 vanished before elimination [2021-06-05 05:09:05,377 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1670 vanished before elimination [2021-06-05 05:09:05,377 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1672 vanished before elimination [2021-06-05 05:09:05,378 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1674 vanished before elimination [2021-06-05 05:09:05,378 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1666 vanished before elimination [2021-06-05 05:09:05,378 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1668 vanished before elimination [2021-06-05 05:09:05,380 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:09:05,380 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1851, output treesize:168 [2021-06-05 05:09:05,541 WARN L205 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 34 [2021-06-05 05:09:05,683 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2021-06-05 05:09:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:05,779 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194503513] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:05,779 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:09:05,780 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:09:05,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301173939] [2021-06-05 05:09:05,780 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:09:05,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:09:05,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:09:05,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:09:05,780 INFO L87 Difference]: Start difference. First operand 421 states and 1352 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:06,664 WARN L205 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 131 [2021-06-05 05:09:07,566 WARN L205 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 137 [2021-06-05 05:09:07,830 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2021-06-05 05:09:08,182 WARN L205 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2021-06-05 05:09:08,375 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2021-06-05 05:09:08,718 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2021-06-05 05:09:08,936 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2021-06-05 05:09:09,274 WARN L205 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2021-06-05 05:09:09,689 WARN L205 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 85 [2021-06-05 05:09:09,928 WARN L205 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2021-06-05 05:09:09,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:09:09,993 INFO L93 Difference]: Finished difference Result 783 states and 2304 transitions. [2021-06-05 05:09:09,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-06-05 05:09:09,993 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:09:09,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:09:09,994 INFO L225 Difference]: With dead ends: 783 [2021-06-05 05:09:09,994 INFO L226 Difference]: Without dead ends: 738 [2021-06-05 05:09:09,995 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 4531.5ms TimeCoverageRelationStatistics Valid=193, Invalid=929, Unknown=0, NotChecked=0, Total=1122 [2021-06-05 05:09:09,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-06-05 05:09:10,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 416. [2021-06-05 05:09:10,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 3.207228915662651) internal successors, (1331), 415 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:10,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1331 transitions. [2021-06-05 05:09:10,001 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1331 transitions. Word has length 20 [2021-06-05 05:09:10,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:09:10,001 INFO L482 AbstractCegarLoop]: Abstraction has 416 states and 1331 transitions. [2021-06-05 05:09:10,001 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:10,001 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1331 transitions. [2021-06-05 05:09:10,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:09:10,002 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:09:10,002 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:09:10,213 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11859 [2021-06-05 05:09:10,213 INFO L430 AbstractCegarLoop]: === Iteration 234 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:09:10,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:09:10,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1517900006, now seen corresponding path program 85 times [2021-06-05 05:09:10,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:09:10,214 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125200989] [2021-06-05 05:09:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:09:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:09:10,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:10,364 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:09:10,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125200989] [2021-06-05 05:09:10,364 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125200989] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:10,364 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890126632] [2021-06-05 05:09:10,365 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:09:10,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:09:10,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:09:10,682 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:10,683 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:10,687 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:10,692 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,696 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:10,696 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:10,701 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,705 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:10,705 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:10,710 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:10,715 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,719 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:10,720 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:10,725 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,730 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:10,730 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:10,735 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:10,740 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:10,745 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:10,750 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:10,755 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,759 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:09:10,760 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:10,765 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:10,770 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:09:10,775 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:10,780 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:10,784 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:10,789 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,792 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:10,793 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:10,987 WARN L205 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2021-06-05 05:09:10,988 INFO L628 ElimStorePlain]: treesize reduction 276, result has 46.6 percent of original size [2021-06-05 05:09:10,993 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 9 xjuncts. [2021-06-05 05:09:10,993 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 2 variables, input treesize:1135, output treesize:229 [2021-06-05 05:09:11,291 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 88 [2021-06-05 05:09:11,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:11,644 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:11,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:11,646 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:11,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:11,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:11,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:11,655 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:11,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:11,663 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:11,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:11,665 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:11,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:11,673 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:11,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:11,674 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:11,682 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:11,683 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:11,683 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:11,684 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:11,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:11,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:11,693 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:12,051 WARN L205 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 88 [2021-06-05 05:09:12,052 INFO L628 ElimStorePlain]: treesize reduction 1161, result has 15.1 percent of original size [2021-06-05 05:09:12,057 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:12,058 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:12,137 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:12,138 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1690 vanished before elimination [2021-06-05 05:09:12,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:12,144 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:12,148 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:12,149 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:12,216 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:12,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:12,222 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:12,286 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:12,286 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1683 vanished before elimination [2021-06-05 05:09:12,286 INFO L518 ElimStorePlain]: Eliminatee array_6 vanished before elimination [2021-06-05 05:09:12,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:12,291 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:12,354 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:12,354 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1685 vanished before elimination [2021-06-05 05:09:12,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:12,359 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:12,419 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:12,419 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1687 vanished before elimination [2021-06-05 05:09:12,419 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1689 vanished before elimination [2021-06-05 05:09:12,421 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:09:12,421 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1507, output treesize:113 [2021-06-05 05:09:12,593 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:12,593 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890126632] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:12,593 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:09:12,593 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 05:09:12,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555656869] [2021-06-05 05:09:12,593 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:09:12,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:09:12,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:09:12,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:09:12,594 INFO L87 Difference]: Start difference. First operand 416 states and 1331 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:12,888 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2021-06-05 05:09:13,140 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 118 [2021-06-05 05:09:13,491 WARN L205 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 129 [2021-06-05 05:09:13,903 WARN L205 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 137 [2021-06-05 05:09:14,331 WARN L205 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 146 [2021-06-05 05:09:15,162 WARN L205 SmtUtils]: Spent 764.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 152 [2021-06-05 05:09:15,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:09:15,198 INFO L93 Difference]: Finished difference Result 565 states and 1698 transitions. [2021-06-05 05:09:15,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:09:15,198 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:09:15,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:09:15,199 INFO L225 Difference]: With dead ends: 565 [2021-06-05 05:09:15,199 INFO L226 Difference]: Without dead ends: 503 [2021-06-05 05:09:15,199 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 3048.3ms TimeCoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2021-06-05 05:09:15,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-06-05 05:09:15,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 430. [2021-06-05 05:09:15,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.195804195804196) internal successors, (1371), 429 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:15,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1371 transitions. [2021-06-05 05:09:15,203 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1371 transitions. Word has length 20 [2021-06-05 05:09:15,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:09:15,204 INFO L482 AbstractCegarLoop]: Abstraction has 430 states and 1371 transitions. [2021-06-05 05:09:15,204 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:15,204 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1371 transitions. [2021-06-05 05:09:15,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:09:15,204 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:09:15,204 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:09:15,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12040,113 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:15,405 INFO L430 AbstractCegarLoop]: === Iteration 235 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:09:15,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:09:15,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1120982352, now seen corresponding path program 86 times [2021-06-05 05:09:15,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:09:15,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867390228] [2021-06-05 05:09:15,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:09:15,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:09:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:15,573 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:09:15,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867390228] [2021-06-05 05:09:15,573 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867390228] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:15,573 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1721091497] [2021-06-05 05:09:15,573 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:15,600 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:09:15,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:09:15,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-05 05:09:15,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:09:15,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:15,835 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,841 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:15,842 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:15,846 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:15,851 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:15,855 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:15,860 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:09:15,864 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:15,869 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:15,873 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:15,878 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:15,882 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:15,887 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,890 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:15,890 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:15,895 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,898 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:15,899 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,903 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:15,904 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:15,908 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:15,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:15,912 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:16,040 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2021-06-05 05:09:16,041 INFO L628 ElimStorePlain]: treesize reduction 107, result has 61.8 percent of original size [2021-06-05 05:09:16,045 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 6 dim-0 vars, and 8 xjuncts. [2021-06-05 05:09:16,046 INFO L247 ElimStorePlain]: Needed 19 recursive calls to eliminate 2 variables, input treesize:715, output treesize:161 [2021-06-05 05:09:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:16,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1721091497] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:16,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:09:16,740 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 05:09:16,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756058101] [2021-06-05 05:09:16,740 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:09:16,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:09:16,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:09:16,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:09:16,740 INFO L87 Difference]: Start difference. First operand 430 states and 1371 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:17,400 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2021-06-05 05:09:17,714 WARN L205 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 114 [2021-06-05 05:09:18,086 WARN L205 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 119 [2021-06-05 05:09:18,527 WARN L205 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 117 [2021-06-05 05:09:18,927 WARN L205 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 129 [2021-06-05 05:09:19,088 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2021-06-05 05:09:19,483 WARN L205 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 125 [2021-06-05 05:09:19,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:09:19,498 INFO L93 Difference]: Finished difference Result 623 states and 1843 transitions. [2021-06-05 05:09:19,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-06-05 05:09:19,498 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:09:19,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:09:19,499 INFO L225 Difference]: With dead ends: 623 [2021-06-05 05:09:19,499 INFO L226 Difference]: Without dead ends: 593 [2021-06-05 05:09:19,499 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 3017.2ms TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:09:19,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2021-06-05 05:09:19,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 430. [2021-06-05 05:09:19,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.195804195804196) internal successors, (1371), 429 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:19,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1371 transitions. [2021-06-05 05:09:19,505 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1371 transitions. Word has length 20 [2021-06-05 05:09:19,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:09:19,505 INFO L482 AbstractCegarLoop]: Abstraction has 430 states and 1371 transitions. [2021-06-05 05:09:19,505 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:19,505 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1371 transitions. [2021-06-05 05:09:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:09:19,505 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:09:19,505 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:09:19,706 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12172,114 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:19,706 INFO L430 AbstractCegarLoop]: === Iteration 236 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:09:19,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:09:19,706 INFO L82 PathProgramCache]: Analyzing trace with hash -577738036, now seen corresponding path program 87 times [2021-06-05 05:09:19,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:09:19,706 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282742251] [2021-06-05 05:09:19,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:09:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:09:19,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:19,850 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:09:19,850 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282742251] [2021-06-05 05:09:19,850 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282742251] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:19,851 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015735189] [2021-06-05 05:09:19,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:19,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:09:19,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:09:19,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:09:19,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:09:20,176 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:20,177 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:20,182 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:20,187 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,191 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:20,192 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:20,197 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:20,201 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:20,206 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:20,211 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:20,216 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:20,221 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:20,226 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:20,231 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:20,235 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,239 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:20,240 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:20,245 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:20,250 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:20,255 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:20,260 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:20,265 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:20,270 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:20,274 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:09:20,279 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:20,284 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:09:20,288 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:20,513 WARN L205 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 45 [2021-06-05 05:09:20,514 INFO L628 ElimStorePlain]: treesize reduction 272, result has 50.4 percent of original size [2021-06-05 05:09:20,520 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 9 xjuncts. [2021-06-05 05:09:20,520 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 2 variables, input treesize:1207, output treesize:264 [2021-06-05 05:09:21,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:21,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:21,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:21,072 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:21,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:21,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:21,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:21,084 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:21,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:21,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:21,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:21,096 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:21,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:21,106 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:21,106 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:21,107 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:21,117 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:21,118 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:21,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:21,119 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:21,129 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:21,129 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:21,130 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:21,695 WARN L205 SmtUtils]: Spent 565.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 115 [2021-06-05 05:09:21,696 INFO L628 ElimStorePlain]: treesize reduction 1634, result has 15.7 percent of original size [2021-06-05 05:09:21,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:21,703 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:21,835 WARN L205 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2021-06-05 05:09:21,835 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:21,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:21,843 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:21,975 WARN L205 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 05:09:21,975 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:21,975 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1711 vanished before elimination [2021-06-05 05:09:21,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:09:21,983 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:22,112 WARN L205 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 05:09:22,112 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:22,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:09:22,119 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:22,244 WARN L205 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2021-06-05 05:09:22,244 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:22,244 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1713 vanished before elimination [2021-06-05 05:09:22,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:22,250 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:22,373 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2021-06-05 05:09:22,373 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:22,373 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1704 vanished before elimination [2021-06-05 05:09:22,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-06-05 05:09:22,385 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:22,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:22,390 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:22,601 WARN L205 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2021-06-05 05:09:22,602 INFO L628 ElimStorePlain]: treesize reduction 24, result has 90.2 percent of original size [2021-06-05 05:09:22,602 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1706 vanished before elimination [2021-06-05 05:09:22,602 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1709 vanished before elimination [2021-06-05 05:09:22,602 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1708 vanished before elimination [2021-06-05 05:09:22,602 INFO L518 ElimStorePlain]: Eliminatee array_6 vanished before elimination [2021-06-05 05:09:22,605 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 14 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 05:09:22,605 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 21 variables, input treesize:2091, output treesize:195 [2021-06-05 05:09:22,772 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2021-06-05 05:09:22,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:22,984 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015735189] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:22,984 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:09:22,984 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 05:09:22,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127792892] [2021-06-05 05:09:22,984 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:09:22,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:09:22,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:09:22,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:09:22,985 INFO L87 Difference]: Start difference. First operand 430 states and 1371 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:23,550 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 127 [2021-06-05 05:09:23,880 WARN L205 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 136 [2021-06-05 05:09:24,431 WARN L205 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 145 [2021-06-05 05:09:24,845 WARN L205 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 141 [2021-06-05 05:09:25,508 WARN L205 SmtUtils]: Spent 617.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 157 [2021-06-05 05:09:25,959 WARN L205 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 153 [2021-06-05 05:09:26,638 WARN L205 SmtUtils]: Spent 632.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 160 [2021-06-05 05:09:26,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:09:26,676 INFO L93 Difference]: Finished difference Result 623 states and 1831 transitions. [2021-06-05 05:09:26,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 05:09:26,676 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:09:26,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:09:26,677 INFO L225 Difference]: With dead ends: 623 [2021-06-05 05:09:26,677 INFO L226 Difference]: Without dead ends: 579 [2021-06-05 05:09:26,677 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 4102.8ms TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2021-06-05 05:09:26,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-06-05 05:09:26,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 433. [2021-06-05 05:09:26,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 3.199074074074074) internal successors, (1382), 432 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:26,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 1382 transitions. [2021-06-05 05:09:26,682 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 1382 transitions. Word has length 20 [2021-06-05 05:09:26,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:09:26,682 INFO L482 AbstractCegarLoop]: Abstraction has 433 states and 1382 transitions. [2021-06-05 05:09:26,682 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:26,682 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 1382 transitions. [2021-06-05 05:09:26,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:09:26,683 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:09:26,683 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:09:26,883 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12305,115 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:26,883 INFO L430 AbstractCegarLoop]: === Iteration 237 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:09:26,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:09:26,884 INFO L82 PathProgramCache]: Analyzing trace with hash -750985728, now seen corresponding path program 88 times [2021-06-05 05:09:26,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:09:26,884 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424374105] [2021-06-05 05:09:26,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:09:26,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:09:27,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:27,053 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:09:27,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424374105] [2021-06-05 05:09:27,053 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424374105] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:27,053 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707932566] [2021-06-05 05:09:27,053 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:27,080 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-05 05:09:27,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:09:27,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:09:27,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:09:27,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:09:27,434 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:27,439 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:27,444 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:27,449 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:27,454 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:09:27,460 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,464 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:27,465 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:27,470 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:27,475 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:27,480 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:27,485 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:27,490 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:27,495 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,499 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:27,499 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:27,505 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:27,510 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,514 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:27,515 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:27,520 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:27,524 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:27,529 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,533 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:27,534 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:27,539 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,544 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:27,544 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:27,549 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:27,781 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 45 [2021-06-05 05:09:27,782 INFO L628 ElimStorePlain]: treesize reduction 323, result has 45.4 percent of original size [2021-06-05 05:09:27,788 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 9 xjuncts. [2021-06-05 05:09:27,788 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 2 variables, input treesize:1207, output treesize:257 [2021-06-05 05:09:28,311 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 99 [2021-06-05 05:09:28,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:28,584 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:28,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:28,586 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2021-06-05 05:09:28,595 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:28,596 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:28,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:09:28,597 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:28,607 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:28,608 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:28,608 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:28,609 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:28,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:28,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:28,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:28,620 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:28,630 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:28,631 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:28,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:28,632 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:28,641 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:28,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:09:28,643 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:29,038 WARN L205 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 97 [2021-06-05 05:09:29,039 INFO L628 ElimStorePlain]: treesize reduction 1244, result has 16.2 percent of original size [2021-06-05 05:09:29,039 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1724 vanished before elimination [2021-06-05 05:09:29,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-06-05 05:09:29,046 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:29,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:29,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:09:29,053 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:29,206 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 87 [2021-06-05 05:09:29,207 INFO L628 ElimStorePlain]: treesize reduction 24, result has 89.0 percent of original size [2021-06-05 05:09:29,212 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:29,213 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:29,285 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:29,285 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1726 vanished before elimination [2021-06-05 05:09:29,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:29,291 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:29,362 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:29,362 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1728 vanished before elimination [2021-06-05 05:09:29,362 INFO L518 ElimStorePlain]: Eliminatee array_6 vanished before elimination [2021-06-05 05:09:29,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:09:29,368 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:29,441 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:29,441 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1731 vanished before elimination [2021-06-05 05:09:29,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:29,446 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:29,512 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:29,512 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1722 vanished before elimination [2021-06-05 05:09:29,515 INFO L550 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 12 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:09:29,515 INFO L247 ElimStorePlain]: Needed 13 recursive calls to eliminate 18 variables, input treesize:1597, output treesize:130 [2021-06-05 05:09:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:29,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707932566] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:29,702 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:09:29,702 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 05:09:29,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536910949] [2021-06-05 05:09:29,702 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:09:29,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:09:29,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:09:29,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:09:29,703 INFO L87 Difference]: Start difference. First operand 433 states and 1382 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:30,242 WARN L205 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 127 [2021-06-05 05:09:30,683 WARN L205 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 129 [2021-06-05 05:09:31,365 WARN L205 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 157 [2021-06-05 05:09:31,761 WARN L205 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 152 [2021-06-05 05:09:32,159 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 158 [2021-06-05 05:09:32,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:09:32,194 INFO L93 Difference]: Finished difference Result 566 states and 1705 transitions. [2021-06-05 05:09:32,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 05:09:32,194 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:09:32,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:09:32,195 INFO L225 Difference]: With dead ends: 566 [2021-06-05 05:09:32,195 INFO L226 Difference]: Without dead ends: 515 [2021-06-05 05:09:32,195 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 3020.5ms TimeCoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-06-05 05:09:32,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-06-05 05:09:32,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 425. [2021-06-05 05:09:32,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 424 states have (on average 3.202830188679245) internal successors, (1358), 424 states have internal predecessors, (1358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:32,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 1358 transitions. [2021-06-05 05:09:32,200 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 1358 transitions. Word has length 20 [2021-06-05 05:09:32,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:09:32,200 INFO L482 AbstractCegarLoop]: Abstraction has 425 states and 1358 transitions. [2021-06-05 05:09:32,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:32,200 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 1358 transitions. [2021-06-05 05:09:32,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:09:32,200 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:09:32,201 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:09:32,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12452,116 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:32,405 INFO L430 AbstractCegarLoop]: === Iteration 238 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:09:32,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:09:32,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1200559462, now seen corresponding path program 89 times [2021-06-05 05:09:32,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:09:32,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320932541] [2021-06-05 05:09:32,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:09:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:09:32,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:32,629 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:09:32,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320932541] [2021-06-05 05:09:32,629 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320932541] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:32,629 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106728869] [2021-06-05 05:09:32,629 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:32,656 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:09:32,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:09:32,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:09:32,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:09:32,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:32,909 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:32,914 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:32,915 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:32,921 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:32,922 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:32,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:32,929 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:32,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:32,935 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:32,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:32,942 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:32,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:32,948 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:32,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:32,955 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:32,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:32,961 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:32,967 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:32,968 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:32,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:32,974 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:32,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:09:32,981 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:32,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:32,988 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:32,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 05:09:32,994 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:33,001 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:33,008 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:33,016 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,022 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:33,023 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:33,031 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:33,038 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,045 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:33,046 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,052 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:33,053 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:33,061 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:33,069 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:33,077 INFO L550 ElimStorePlain]: Start of recursive call 26: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:33,084 INFO L550 ElimStorePlain]: Start of recursive call 27: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:33,091 INFO L550 ElimStorePlain]: Start of recursive call 28: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:33,099 INFO L550 ElimStorePlain]: Start of recursive call 29: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:33,107 INFO L550 ElimStorePlain]: Start of recursive call 30: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:33,114 INFO L550 ElimStorePlain]: Start of recursive call 31: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:33,121 INFO L550 ElimStorePlain]: Start of recursive call 32: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,127 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:33,128 INFO L550 ElimStorePlain]: Start of recursive call 33: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,133 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:33,134 INFO L550 ElimStorePlain]: Start of recursive call 34: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:33,141 INFO L550 ElimStorePlain]: Start of recursive call 35: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,146 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:33,147 INFO L550 ElimStorePlain]: Start of recursive call 36: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:09:33,154 INFO L550 ElimStorePlain]: Start of recursive call 37: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:33,161 INFO L550 ElimStorePlain]: Start of recursive call 38: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:33,168 INFO L550 ElimStorePlain]: Start of recursive call 39: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:33,175 INFO L550 ElimStorePlain]: Start of recursive call 40: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:33,181 INFO L550 ElimStorePlain]: Start of recursive call 41: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:33,188 INFO L550 ElimStorePlain]: Start of recursive call 42: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,194 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:33,195 INFO L550 ElimStorePlain]: Start of recursive call 43: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:33,201 INFO L550 ElimStorePlain]: Start of recursive call 44: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:33,208 INFO L550 ElimStorePlain]: Start of recursive call 45: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:33,215 INFO L550 ElimStorePlain]: Start of recursive call 46: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:33,222 INFO L550 ElimStorePlain]: Start of recursive call 47: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:33,229 INFO L550 ElimStorePlain]: Start of recursive call 48: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,234 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:33,235 INFO L550 ElimStorePlain]: Start of recursive call 49: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:33,241 INFO L550 ElimStorePlain]: Start of recursive call 50: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:33,248 INFO L550 ElimStorePlain]: Start of recursive call 51: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 05:09:33,254 INFO L550 ElimStorePlain]: Start of recursive call 52: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:33,261 INFO L550 ElimStorePlain]: Start of recursive call 53: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:33,269 INFO L550 ElimStorePlain]: Start of recursive call 54: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,274 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:33,275 INFO L550 ElimStorePlain]: Start of recursive call 55: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,281 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:33,282 INFO L550 ElimStorePlain]: Start of recursive call 56: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,288 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:33,288 INFO L550 ElimStorePlain]: Start of recursive call 57: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:33,295 INFO L550 ElimStorePlain]: Start of recursive call 58: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:33,301 INFO L550 ElimStorePlain]: Start of recursive call 59: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,306 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:33,307 INFO L550 ElimStorePlain]: Start of recursive call 60: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:33,313 INFO L550 ElimStorePlain]: Start of recursive call 61: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:33,319 INFO L550 ElimStorePlain]: Start of recursive call 62: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,325 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 32 [2021-06-05 05:09:33,327 INFO L550 ElimStorePlain]: Start of recursive call 63: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 26 [2021-06-05 05:09:33,337 INFO L550 ElimStorePlain]: Start of recursive call 64: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:09:33,345 INFO L550 ElimStorePlain]: Start of recursive call 65: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,361 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:33,362 INFO L550 ElimStorePlain]: Start of recursive call 66: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,368 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:33,368 INFO L550 ElimStorePlain]: Start of recursive call 67: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:33,579 WARN L205 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 37 [2021-06-05 05:09:33,580 INFO L628 ElimStorePlain]: treesize reduction 863, result has 15.7 percent of original size [2021-06-05 05:09:33,581 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 8 xjuncts. [2021-06-05 05:09:33,581 INFO L247 ElimStorePlain]: Needed 67 recursive calls to eliminate 1 variables, input treesize:2875, output treesize:161 [2021-06-05 05:09:34,008 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-06-05 05:09:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:34,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106728869] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:34,085 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:09:34,085 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-05 05:09:34,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251264142] [2021-06-05 05:09:34,085 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-05 05:09:34,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:09:34,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-05 05:09:34,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-06-05 05:09:34,085 INFO L87 Difference]: Start difference. First operand 425 states and 1358 transitions. Second operand has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:34,471 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 49 [2021-06-05 05:09:34,765 WARN L205 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 54 [2021-06-05 05:09:35,314 WARN L205 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 87 [2021-06-05 05:09:35,854 WARN L205 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2021-06-05 05:09:35,998 WARN L205 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 38 [2021-06-05 05:09:36,454 WARN L205 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2021-06-05 05:09:36,651 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2021-06-05 05:09:36,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:09:36,774 INFO L93 Difference]: Finished difference Result 541 states and 1668 transitions. [2021-06-05 05:09:36,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-05 05:09:36,774 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:09:36,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:09:36,775 INFO L225 Difference]: With dead ends: 541 [2021-06-05 05:09:36,775 INFO L226 Difference]: Without dead ends: 511 [2021-06-05 05:09:36,775 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 3090.4ms TimeCoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2021-06-05 05:09:36,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-06-05 05:09:36,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 431. [2021-06-05 05:09:36,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 3.202325581395349) internal successors, (1377), 430 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:36,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1377 transitions. [2021-06-05 05:09:36,780 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1377 transitions. Word has length 20 [2021-06-05 05:09:36,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:09:36,780 INFO L482 AbstractCegarLoop]: Abstraction has 431 states and 1377 transitions. [2021-06-05 05:09:36,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 1.9) internal successors, (38), 20 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:36,780 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1377 transitions. [2021-06-05 05:09:36,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:09:36,781 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:09:36,781 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:09:36,981 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12627,117 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:36,981 INFO L430 AbstractCegarLoop]: === Iteration 239 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:09:36,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:09:36,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1679844138, now seen corresponding path program 90 times [2021-06-05 05:09:36,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:09:36,982 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594878032] [2021-06-05 05:09:36,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:09:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:09:37,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:37,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:09:37,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594878032] [2021-06-05 05:09:37,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594878032] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:37,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945906916] [2021-06-05 05:09:37,189 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:37,217 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-06-05 05:09:37,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:09:37,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:09:37,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:09:37,516 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 59 [2021-06-05 05:09:38,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,073 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,073 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:09:38,074 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:38,080 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,081 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:38,082 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:38,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,088 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:38,089 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:38,095 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,096 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:38,097 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:38,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:09:38,104 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:38,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:38,112 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:38,551 WARN L205 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 79 [2021-06-05 05:09:38,551 INFO L628 ElimStorePlain]: treesize reduction 569, result has 44.4 percent of original size [2021-06-05 05:09:38,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:09:38,557 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:38,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:38,563 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:38,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:38,569 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:38,886 WARN L205 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2021-06-05 05:09:38,886 INFO L628 ElimStorePlain]: treesize reduction 31, result has 92.6 percent of original size [2021-06-05 05:09:38,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,891 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:09:38,892 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:38,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:38,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:09:38,898 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:38,902 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:38,902 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:39,039 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2021-06-05 05:09:39,039 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:39,044 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:39,045 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:39,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:09:39,046 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:39,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:39,051 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:39,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:39,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:39,061 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:39,194 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2021-06-05 05:09:39,195 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:39,201 INFO L550 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 6 dim-0 vars, and 10 xjuncts. [2021-06-05 05:09:39,201 INFO L247 ElimStorePlain]: Needed 16 recursive calls to eliminate 8 variables, input treesize:1129, output treesize:286 [2021-06-05 05:09:39,431 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2021-06-05 05:09:39,609 INFO L446 ElimStorePlain]: Different costs {0=[v_prenex_1747, array_6, v_prenex_1745], 1=[v_prenex_1746, array_3, v_prenex_1744]} [2021-06-05 05:09:39,617 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:39,618 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:39,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:39,625 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:39,630 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:39,631 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:39,637 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:39,637 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:39,643 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:39,644 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:39,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:39,651 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:39,911 WARN L205 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 61 [2021-06-05 05:09:39,911 INFO L628 ElimStorePlain]: treesize reduction 683, result has 24.8 percent of original size [2021-06-05 05:09:39,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:39,916 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:40,005 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:40,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:40,010 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:40,097 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:40,097 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1746 vanished before elimination [2021-06-05 05:09:40,097 INFO L518 ElimStorePlain]: Eliminatee array_3 vanished before elimination [2021-06-05 05:09:40,097 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1744 vanished before elimination [2021-06-05 05:09:40,100 INFO L550 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 6 dim-1 vars, End of recursive call: and 11 xjuncts. [2021-06-05 05:09:40,100 INFO L247 ElimStorePlain]: Needed 9 recursive calls to eliminate 9 variables, input treesize:1128, output treesize:179 [2021-06-05 05:09:40,240 WARN L205 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2021-06-05 05:09:40,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:40,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945906916] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:40,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:09:40,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-06-05 05:09:40,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094901739] [2021-06-05 05:09:40,410 INFO L462 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-06-05 05:09:40,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:09:40,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-06-05 05:09:40,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2021-06-05 05:09:40,410 INFO L87 Difference]: Start difference. First operand 431 states and 1377 transitions. Second operand has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:40,833 WARN L205 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2021-06-05 05:09:41,138 WARN L205 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2021-06-05 05:09:41,610 WARN L205 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 141 [2021-06-05 05:09:42,103 WARN L205 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 133 [2021-06-05 05:09:42,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:09:42,902 INFO L93 Difference]: Finished difference Result 643 states and 1879 transitions. [2021-06-05 05:09:42,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-05 05:09:42,903 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:09:42,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:09:42,903 INFO L225 Difference]: With dead ends: 643 [2021-06-05 05:09:42,903 INFO L226 Difference]: Without dead ends: 571 [2021-06-05 05:09:42,904 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 3016.4ms TimeCoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2021-06-05 05:09:42,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2021-06-05 05:09:42,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 428. [2021-06-05 05:09:42,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 3.199063231850117) internal successors, (1366), 427 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:42,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1366 transitions. [2021-06-05 05:09:42,908 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1366 transitions. Word has length 20 [2021-06-05 05:09:42,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:09:42,909 INFO L482 AbstractCegarLoop]: Abstraction has 428 states and 1366 transitions. [2021-06-05 05:09:42,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 19 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:42,909 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1366 transitions. [2021-06-05 05:09:42,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:09:42,909 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:09:42,909 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:09:43,109 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12699,118 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:43,110 INFO L430 AbstractCegarLoop]: === Iteration 240 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:09:43,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:09:43,110 INFO L82 PathProgramCache]: Analyzing trace with hash -2079893356, now seen corresponding path program 91 times [2021-06-05 05:09:43,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:09:43,110 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351470445] [2021-06-05 05:09:43,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:09:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:09:43,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:43,297 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:09:43,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351470445] [2021-06-05 05:09:43,298 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351470445] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:43,298 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830686511] [2021-06-05 05:09:43,298 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:09:43,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2021-06-05 05:09:43,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:09:43,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:43,714 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:43,719 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,724 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:43,725 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:43,730 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,735 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:43,736 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:43,741 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:43,747 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:09:43,752 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:43,758 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,762 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:09:43,763 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:43,769 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:43,774 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,778 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:43,779 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:43,784 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:43,790 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:43,796 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:43,801 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:43,806 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:43,811 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:43,816 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,820 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:43,821 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:43,826 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:43,831 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:43,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:43,836 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:44,054 WARN L205 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2021-06-05 05:09:44,055 INFO L628 ElimStorePlain]: treesize reduction 315, result has 45.3 percent of original size [2021-06-05 05:09:44,061 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 9 xjuncts. [2021-06-05 05:09:44,061 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 2 variables, input treesize:1207, output treesize:249 [2021-06-05 05:09:44,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:44,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:44,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:44,427 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:44,436 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:44,437 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:44,446 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:44,447 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:44,457 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:44,457 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:44,466 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:44,467 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:44,476 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:44,477 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:44,952 WARN L205 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 110 [2021-06-05 05:09:44,953 INFO L628 ElimStorePlain]: treesize reduction 1324, result has 18.7 percent of original size [2021-06-05 05:09:44,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:44,961 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:45,097 WARN L205 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2021-06-05 05:09:45,098 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:45,098 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1760 vanished before elimination [2021-06-05 05:09:45,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:09:45,104 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:45,232 WARN L205 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2021-06-05 05:09:45,232 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:45,232 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1762 vanished before elimination [2021-06-05 05:09:45,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:45,238 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:45,243 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:45,244 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:45,349 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2021-06-05 05:09:45,349 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:45,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-06-05 05:09:45,355 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:45,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:45,361 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:45,540 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2021-06-05 05:09:45,541 INFO L628 ElimStorePlain]: treesize reduction 21, result has 90.8 percent of original size [2021-06-05 05:09:45,541 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1764 vanished before elimination [2021-06-05 05:09:45,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:45,546 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:45,633 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:45,633 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1755 vanished before elimination [2021-06-05 05:09:45,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:45,639 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:45,725 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:45,725 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1757 vanished before elimination [2021-06-05 05:09:45,725 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1759 vanished before elimination [2021-06-05 05:09:45,725 INFO L518 ElimStorePlain]: Eliminatee array_6 vanished before elimination [2021-06-05 05:09:45,728 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 14 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 05:09:45,728 INFO L247 ElimStorePlain]: Needed 15 recursive calls to eliminate 21 variables, input treesize:1869, output treesize:163 [2021-06-05 05:09:45,870 WARN L205 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2021-06-05 05:09:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:46,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830686511] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:46,032 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:09:46,032 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 05:09:46,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766818516] [2021-06-05 05:09:46,032 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:09:46,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:09:46,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:09:46,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:09:46,033 INFO L87 Difference]: Start difference. First operand 428 states and 1366 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:46,347 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2021-06-05 05:09:46,555 WARN L205 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2021-06-05 05:09:46,844 WARN L205 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 119 [2021-06-05 05:09:47,405 WARN L205 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2021-06-05 05:09:47,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:09:47,464 INFO L93 Difference]: Finished difference Result 588 states and 1765 transitions. [2021-06-05 05:09:47,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-05 05:09:47,464 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:09:47,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:09:47,465 INFO L225 Difference]: With dead ends: 588 [2021-06-05 05:09:47,465 INFO L226 Difference]: Without dead ends: 558 [2021-06-05 05:09:47,466 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1739.6ms TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2021-06-05 05:09:47,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-06-05 05:09:47,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 428. [2021-06-05 05:09:47,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 3.199063231850117) internal successors, (1366), 427 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:47,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1366 transitions. [2021-06-05 05:09:47,470 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1366 transitions. Word has length 20 [2021-06-05 05:09:47,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:09:47,470 INFO L482 AbstractCegarLoop]: Abstraction has 428 states and 1366 transitions. [2021-06-05 05:09:47,470 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:47,470 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1366 transitions. [2021-06-05 05:09:47,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:09:47,471 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:09:47,471 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:09:47,671 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12927 [2021-06-05 05:09:47,672 INFO L430 AbstractCegarLoop]: === Iteration 241 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:09:47,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:09:47,672 INFO L82 PathProgramCache]: Analyzing trace with hash 516353552, now seen corresponding path program 92 times [2021-06-05 05:09:47,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:09:47,672 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349691189] [2021-06-05 05:09:47,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:09:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:09:47,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:47,831 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:09:47,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349691189] [2021-06-05 05:09:47,831 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349691189] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:47,831 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615841362] [2021-06-05 05:09:47,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:47,858 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-05 05:09:47,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:09:47,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:09:47,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:09:48,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:48,199 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:48,205 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,210 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:48,211 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:48,216 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:48,222 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:48,228 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:09:48,234 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,238 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:48,239 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:48,245 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,249 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:48,250 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:48,256 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:48,262 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:48,269 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:48,274 INFO L550 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:48,280 INFO L550 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-06-05 05:09:48,286 INFO L550 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-06-05 05:09:48,292 INFO L550 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:48,298 INFO L550 ElimStorePlain]: Start of recursive call 19: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-06-05 05:09:48,304 INFO L550 ElimStorePlain]: Start of recursive call 20: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 28 [2021-06-05 05:09:48,310 INFO L550 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:48,316 INFO L550 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,328 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:48,329 INFO L550 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:48,334 INFO L550 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:48,339 INFO L550 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:48,589 WARN L205 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 48 [2021-06-05 05:09:48,589 INFO L628 ElimStorePlain]: treesize reduction 285, result has 50.9 percent of original size [2021-06-05 05:09:48,596 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 7 dim-0 vars, and 9 xjuncts. [2021-06-05 05:09:48,597 INFO L247 ElimStorePlain]: Needed 25 recursive calls to eliminate 2 variables, input treesize:1279, output treesize:283 [2021-06-05 05:09:49,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:49,055 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:49,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:49,056 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:49,067 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:49,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:49,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2021-06-05 05:09:49,069 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:49,080 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:49,081 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:49,091 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:49,092 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:49,102 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:49,103 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:49,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2021-06-05 05:09:49,104 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:49,114 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:49,115 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:49,657 WARN L205 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 185 DAG size of output: 116 [2021-06-05 05:09:49,657 INFO L628 ElimStorePlain]: treesize reduction 1553, result has 16.7 percent of original size [2021-06-05 05:09:49,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:49,665 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:49,799 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 05:09:49,799 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:49,800 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1780 vanished before elimination [2021-06-05 05:09:49,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:49,807 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:49,941 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2021-06-05 05:09:49,941 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:49,947 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-06-05 05:09:49,948 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:50,085 WARN L205 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2021-06-05 05:09:50,085 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:50,085 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1782 vanished before elimination [2021-06-05 05:09:50,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-06-05 05:09:50,092 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:50,220 WARN L205 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2021-06-05 05:09:50,221 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:50,221 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1773 vanished before elimination [2021-06-05 05:09:50,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:50,227 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:50,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:09:50,228 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:50,233 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-06-05 05:09:50,234 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:50,341 WARN L205 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2021-06-05 05:09:50,341 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:50,341 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1775 vanished before elimination [2021-06-05 05:09:50,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:09:50,347 INFO L550 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:50,449 WARN L205 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-06-05 05:09:50,449 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:50,449 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1777 vanished before elimination [2021-06-05 05:09:50,450 INFO L518 ElimStorePlain]: Eliminatee v_prenex_1779 vanished before elimination [2021-06-05 05:09:50,450 INFO L518 ElimStorePlain]: Eliminatee array_6 vanished before elimination [2021-06-05 05:09:50,453 INFO L550 ElimStorePlain]: Start of recursive call 1: 7 dim-0 vars, 14 dim-1 vars, End of recursive call: and 9 xjuncts. [2021-06-05 05:09:50,453 INFO L247 ElimStorePlain]: Needed 14 recursive calls to eliminate 21 variables, input treesize:2043, output treesize:195 [2021-06-05 05:09:50,622 WARN L205 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 38 [2021-06-05 05:09:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:50,834 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615841362] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:50,834 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 05:09:50,834 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-06-05 05:09:50,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327724864] [2021-06-05 05:09:50,834 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-05 05:09:50,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 05:09:50,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-05 05:09:50,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-06-05 05:09:50,835 INFO L87 Difference]: Start difference. First operand 428 states and 1366 transitions. Second operand has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:51,168 WARN L205 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2021-06-05 05:09:51,391 WARN L205 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2021-06-05 05:09:51,709 WARN L205 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 131 [2021-06-05 05:09:52,156 WARN L205 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 67 [2021-06-05 05:09:52,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 05:09:52,194 INFO L93 Difference]: Finished difference Result 535 states and 1633 transitions. [2021-06-05 05:09:52,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 05:09:52,194 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-06-05 05:09:52,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 05:09:52,195 INFO L225 Difference]: With dead ends: 535 [2021-06-05 05:09:52,195 INFO L226 Difference]: Without dead ends: 513 [2021-06-05 05:09:52,195 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1776.5ms TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2021-06-05 05:09:52,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-06-05 05:09:52,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 431. [2021-06-05 05:09:52,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 430 states have (on average 3.202325581395349) internal successors, (1377), 430 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:52,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 1377 transitions. [2021-06-05 05:09:52,200 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 1377 transitions. Word has length 20 [2021-06-05 05:09:52,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 05:09:52,200 INFO L482 AbstractCegarLoop]: Abstraction has 431 states and 1377 transitions. [2021-06-05 05:09:52,200 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.8888888888888888) internal successors, (34), 18 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 05:09:52,200 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 1377 transitions. [2021-06-05 05:09:52,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-06-05 05:09:52,201 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 05:09:52,201 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 05:09:52,401 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13099,120 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:52,401 INFO L430 AbstractCegarLoop]: === Iteration 242 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 05:09:52,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 05:09:52,401 INFO L82 PathProgramCache]: Analyzing trace with hash 343105860, now seen corresponding path program 93 times [2021-06-05 05:09:52,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 05:09:52,402 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774147456] [2021-06-05 05:09:52,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 05:09:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 05:09:52,551 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 05:09:52,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 05:09:52,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774147456] [2021-06-05 05:09:52,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774147456] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 05:09:52,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241953054] [2021-06-05 05:09:52,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:52,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-06-05 05:09:52,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-05 05:09:52,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2021-06-05 05:09:52,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 05:09:53,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:53,373 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:09:53,374 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:53,848 WARN L205 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 132 [2021-06-05 05:09:53,848 INFO L628 ElimStorePlain]: treesize reduction 280, result has 64.7 percent of original size [2021-06-05 05:09:53,855 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:53,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:09:53,856 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:54,079 WARN L205 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2021-06-05 05:09:54,079 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:54,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:54,087 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:09:54,088 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:54,302 WARN L205 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-06-05 05:09:54,302 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:54,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:54,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:54,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:09:54,310 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:54,316 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:54,316 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:09:54,317 INFO L550 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:54,695 WARN L205 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 115 [2021-06-05 05:09:54,696 INFO L628 ElimStorePlain]: treesize reduction 27, result has 94.3 percent of original size [2021-06-05 05:09:54,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:54,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:54,704 INFO L550 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:54,910 WARN L205 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2021-06-05 05:09:54,910 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:54,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:54,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:54,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:09:54,918 INFO L550 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:54,923 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:54,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:09:54,924 INFO L550 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:55,104 WARN L205 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2021-06-05 05:09:55,105 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:55,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:55,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:55,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-06-05 05:09:55,113 INFO L550 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:55,119 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:55,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-06-05 05:09:55,120 INFO L550 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:55,305 WARN L205 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2021-06-05 05:09:55,305 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-05 05:09:55,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:55,311 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:55,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 17 [2021-06-05 05:09:55,312 INFO L550 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:55,317 INFO L173 IndexEqualityManager]: detected equality via solver [2021-06-05 05:09:55,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2021-06-05 05:09:55,318 INFO L550 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2021-06-05 05:09:55,480 WARN L205 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2021-06-05 05:09:55,480 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size Received shutdown request... [2021-06-05 05:09:55,686 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13276,121 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 05:09:55,686 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-05 05:09:55,688 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 05:09:55,689 WARN L196 ceAbstractionStarter]: Timeout [2021-06-05 05:09:55,689 INFO L202 PluginConnector]: Adding new model word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 05:09:55 BasicIcfg [2021-06-05 05:09:55,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 05:09:55,690 INFO L168 Benchmark]: Toolchain (without parser) took 739120.03 ms. Allocated memory was 346.0 MB in the beginning and 499.1 MB in the end (delta: 153.1 MB). Free memory was 325.3 MB in the beginning and 398.5 MB in the end (delta: -73.2 MB). Peak memory consumption was 300.1 MB. Max. memory is 16.0 GB. [2021-06-05 05:09:55,690 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 346.0 MB. Free memory was 326.7 MB in the beginning and 326.7 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 05:09:55,690 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.73 ms. Allocated memory is still 346.0 MB. Free memory was 325.2 MB in the beginning and 323.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 05:09:55,690 INFO L168 Benchmark]: Boogie Preprocessor took 16.23 ms. Allocated memory is still 346.0 MB. Free memory was 323.7 MB in the beginning and 322.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 05:09:55,690 INFO L168 Benchmark]: RCFGBuilder took 369.90 ms. Allocated memory is still 346.0 MB. Free memory was 322.6 MB in the beginning and 323.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.0 GB. [2021-06-05 05:09:55,690 INFO L168 Benchmark]: TraceAbstraction took 738689.68 ms. Allocated memory was 346.0 MB in the beginning and 499.1 MB in the end (delta: 153.1 MB). Free memory was 322.8 MB in the beginning and 398.5 MB in the end (delta: -75.7 MB). Peak memory consumption was 297.4 MB. Max. memory is 16.0 GB. [2021-06-05 05:09:55,691 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 346.0 MB. Free memory was 326.7 MB in the beginning and 326.7 MB in the end (delta: 76.1 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 39.73 ms. Allocated memory is still 346.0 MB. Free memory was 325.2 MB in the beginning and 323.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 16.23 ms. Allocated memory is still 346.0 MB. Free memory was 323.7 MB in the beginning and 322.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 369.90 ms. Allocated memory is still 346.0 MB. Free memory was 322.6 MB in the beginning and 323.8 MB in the end (delta: -1.2 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.0 GB. * TraceAbstraction took 738689.68 ms. Allocated memory was 346.0 MB in the beginning and 499.1 MB in the end (delta: 153.1 MB). Free memory was 322.8 MB in the beginning and 398.5 MB in the end (delta: -75.7 MB). Peak memory consumption was 297.4 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while PartialQuantifierElimination was eliminating quantifiers from formula with 0 quantifier alternations,while QuantifierPusher was running 1 iterations of DualJunctionQuantifierElimination. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 738566.7ms, OverallIterations: 242, TraceHistogramMax: 1, EmptinessCheckTime: 148.3ms, AutomataDifference: 403816.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 32.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 13366 SDtfs, 25187 SDslu, 79880 SDs, 0 SdLazy, 69292 SolverSat, 3398 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46111.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6044 GetRequests, 1773 SyntacticMatches, 178 SemanticMatches, 4093 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9546 ImplicationChecksByTransitivity, 441498.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=433occurred in iteration=236, InterpolantAutomatonStates: 2523, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1315.0ms AutomataMinimizationTime, 241 MinimizatonAttempts, 51423 StatesRemovedByMinimization, 240 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 608.5ms SsaConstructionTime, 1819.3ms SatisfiabilityAnalysisTime, 299571.1ms InterpolantComputationTime, 6664 NumberOfCodeBlocks, 6664 NumberOfCodeBlocksAsserted, 454 NumberOfCheckSat, 6304 ConstructedInterpolants, 553 QuantifiedInterpolants, 209209 SizeOfPredicates, 1324 NumberOfNonLiveVariables, 9207 ConjunctsInSsa, 2374 ConjunctsInUnsatCore, 360 InterpolantComputations, 122 PerfectInterpolantSequences, 0/606 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown